Hi Marcel,
Thanks for the log, I’ve looked into it and indeed something is going wrong, but I can’t quite understand yet why.
I’d like to do some troubleshooting, are you comfortable with running an app from the CLI? If so, I can prepare a version for you to run and track down the problem. (It seems you doorbell returns a value I’ve never seen before, you running the app from the CLI would be the fastest method to find out what it sends)
These are the instructions to run an app from the CLI: