Dev Keyboard with smn base stops repeatedly on Android 11

[rueter]

On May 3, I updated my divvun dev keyboard with google play.
Telephone is: Nokia 5.3 with an
Android 11 system.

Divvun Dev Keyboard (beta-version)
12.4.2022

Remove previous version, and then reinstall.

Sign in with Inari Keyboard and add Apurinã, Erzya and Skolt Sami.
Finish

Open Zulip and press one letter, after which a sign appears
«'Divvun Dev Keyboards stop repeatedly'»
Only one letter has been entered and there is no way of entering a second letter.
If I start writing to a different recipient, I can once again only write one letter.
The same holds for Whatsapp, Telegram.
But if I use chrome url or google search, there is no problem.