Sync Thread credentials failed

[WallyR (Wally)]

Sometimes the Google Play services refuse to remove the old credentials.
Try this guide to copy the credentials.

Cannot add Matter devices

Make sure you have the correct thread credentials on the Android. On the Android Companion App open Settings → Companion App → Troubleshooting (I think that is what it is called in english, but it list logfiles and other tools to diagnostics as description of the item). In this next window click the Sync Thread Login Credentials (Again it might not be named exactly that, but close to and there should not be that many options and it should be in the bottom) It should say either something with …