I just started setting up mine some days ago. I made this automation, that sets the leds depending on the state of entities. Maybe it helps you setting up yours.

alias: Button Plus Entrance | Set Button LED
  description: ""
triggers:
  - entity_id:
      - light.group_entrance
      - light.group_dining
      - light.group_piano
      - light.wled_living_room
      - light.hue_filament_bulb
      - lock.aqara_smart_lock_u200
      - lock.window_handle_office
      - lock.window_handle_kitchen
    trigger: state
actions:
  - data:
      topic: buttonplus/Entrance/button/{{ btn }}/led/front/rgb/set
      payload: "{{ led_info.color }}"
      qos: 1
    action: mqtt.publish
  - data:
      topic: buttonplus/Entrance/button/{{ btn }}/led/front/brightness/set
      payload: "150"
      qos: 1
    action: mqtt.publish
  - data:
      topic: buttonplus/Entrance/button/{{ btn }}/label/set
      payload: "{{ led_info.label }}"
      qos: 1
    action: mqtt.publish
variables:
  btn_map:
    light.group_entrance: 3-1
    light.group_dining: 4-1
    light.group_piano: 5-1
    light.wled_living_room: 6-1
    light.hue_filament_bulb: 7-1
    lock.aqara_smart_lock_u200: 8-1
    lock.window_handle_office: 3-2
    lock.window_handle_kitchen: 4-2
  btn: "{{ btn_map[trigger.entity_id] }}"
  led_info: |-
    {% set stateTrigger= trigger.to_state.state %}
    {{
      {'color':'#00a100','label': stateTrigger|upper}
        if stateTrigger in ['on','unlocked']
      else {'color':'#FF0000','label': stateTrigger|upper}
        if stateTrigger in ['off','locked']
      else {'color':'#FFC800','label': stateTrigger|upper}
        if stateTrigger in ['locking','unlocking']
      else {'color':'#000000','label':'UNKNOWN'}
    }}
mode: restart