Speaker Notify app has disappeared?

Has the Speaker Notify app suddenly disappeared? I used it to play custom sounds (mp3 clips) on my Aeon Doorbell.

Speaker Companion, which I assume is the replacement, doesn’t let me play custom messages when I select the Aeon doorbell as my speaker and so this has become useless and I only purchased that doorbell for this explicit purpose.

Any suggestions?

I have an option to set a specific message in Speaker Companion. It’s a little buried, maybe check again?

Thanks Adam. I found the method of setting the specific message but the
issue is that the ‘speaker’ that I use only says "This speaker (Aeon/Aeotec
Doorbell) can only play current selection’ instead of previously being able
to specify the message.