I’m fan of integrating as much as possible in the Home Assistant companion app.
The Harmony remote app has much to be desired as well.
So I rather added the functionality of the Harmony app in Lovelace instead.
Adjust to your liking.
You will find the needed device id in files named harmony_xxxxxxxx.conf

Lovelace:

cards:
  - card:
      entities:
        - entity: remote.living_room_hub
          icon: mdi:power
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_off
            service_data:
              activity: PowerOff
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:television-classic
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Media
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:nintendo-switch
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Switch
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:radio
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room NetRadio
              entity_id: remote.living_room_hub
      type: glance
    conditions:
      - entity: remote.living_room_hub
        state: 'off'
    type: conditional
  - card:
      entities:
        - entity: remote.living_room_hub
          icon: mdi:power
          name: Media
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_off
            service_data:
              activity: PowerOff
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:television-classic
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Media
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:nintendo-switch
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Switch
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:radio
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room NetRadio
              entity_id: remote.living_room_hub
        - assumed_state: false
          control: hidden
          entity: remote.living_room_hub
          icon: mdi:volume-off
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Mute
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - assumed_state: false
          control: hidden
          entity: remote.living_room_hub
          icon: mdi:play-pause
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Play
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:subtitles-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: NextSubtitle
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:chevron-up-box-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: DirectionUp
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:stop
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Stop
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:spotify
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Spotify
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:volume-plus
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: VolumeUp
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:chevron-left-box-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: DirectionLeft
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:checkbox-blank-circle-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Select
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:chevron-right-box-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: DirectionRight
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:home
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Home
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:volume-minus
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: VolumeDown
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:rewind
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Rewind
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:chevron-down-box-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: DirectionDown
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:fast-forward
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: FastForward
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:arrow-left
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Back
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
      type: glance
    conditions:
      - entity: switch.living_room_media
        state: 'on'
    type: conditional
  - card:
      entities:
        - entity: remote.living_room_hub
          icon: mdi:power
          name: Switch
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_off
            service_data:
              activity: PowerOff
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:television-classic
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Media
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:nintendo-switch
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Switch
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:radio
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room NetRadio
              entity_id: remote.living_room_hub
        - assumed_state: false
          control: hidden
          entity: remote.living_room_hub
          icon: mdi:volume-off
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Mute
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:spotify
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Spotify
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:volume-plus
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: VolumeUp
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:home
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              command: Home
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:volume-minus
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: VolumeDown
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
      type: glance
    conditions:
      - entity: switch.living_room_switch
        state: 'on'
    type: conditional
  - card:
      entities:
        - entity: remote.living_room_hub
          icon: mdi:power
          name: NetRadio
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_off
            service_data:
              activity: PowerOff
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:television-classic
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Media
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:nintendo-switch
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Switch
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:radio
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room NetRadio
              entity_id: remote.living_room_hub
        - assumed_state: false
          control: hidden
          entity: remote.living_room_hub
          icon: mdi:volume-off
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Mute
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - assumed_state: false
          control: hidden
          entity: remote.living_room_hub
          icon: mdi:play-pause
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Play
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:subtitles-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: NextSubtitle
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:chevron-up-box-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: DirectionUp
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:stop
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Stop
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:spotify
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              activity: Living room Spotify
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:volume-plus
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: VolumeUp
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:chevron-left-box-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: DirectionLeft
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:checkbox-blank-circle-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Select
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:chevron-right-box-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: DirectionRight
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:home
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.turn_on
            service_data:
              command: Home
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:volume-minus
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: VolumeDown
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:rewind
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Rewind
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:chevron-down-box-outline
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: DirectionDown
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:fast-forward
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: FastForward
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
        - entity: remote.living_room_hub
          icon: mdi:arrow-left
          name: ' '
          show_state: false
          tap_action:
            action: call-service
            service: remote.send_command
            service_data:
              command: Return
              device: 'xxxxxxxx'
              entity_id: remote.living_room_hub
      type: glance
    conditions:
      - entity: switch.living_room_netradio
        state: 'on'
    type: conditional
style: |
  ha-card {
    border-radius: 15px;
    --card-background-color: rgba(255, 255, 255, 0.6)
  }
title: Living room Remote
type: custom:vertical-stack-in-card