Notify Group no longer works

Hi everyone, wondered if anyone has a solution to this issue. My notifiation group config stopped working at somepoint. If I go to developer->services and send a notification direct to notify.mobile_app_jon_s_s24, it works, but sending it via the notification group does not. I currently only have one device in the group for troubleshooting.

notify:
  - platform: group
    name: "mobile_devices"
    services:
      - service: mobile_app_jon_s_s24

Need more info. ‘Does not work’ is never enough.

Please show the automation and the logs.

Create your group like this

notify:
  - name: ALL_DEVICES
    platform: group
    services:
      - service: mobile_app_jon_s_s24

My test was successful.