Can't find the OpenPGP activation

Hi there,

I like the update, and I have the same problem as before with the encryption.
(Android 10, K9 last update, OpenKeyChain)

I can send encrypted mails, so there is a connection to OpenPGP. But, I cannot open mails, getting the error message: This email is encrypted. To open this mail a compatible OpenPGP app has to be installed and configured.

I have installed the app OpenKeyChain, and in the account settings “end to end encryption” it says that there is a connection to OpenKeyChain. Maybe I did not tell k9 how to use it??

What do I have to do?

Thanks, and best regards