Solution: in systemsettings there is a page where you have to select the default wallet.

I tried creating a GPG encrypted Kwallet just to read in the Archwiki that this is not supported.

I exported my wallet before, and then imported it again. Everything is broken?

Nextcloud, Wifi, everything needs Kwallet and its broken.

I named it kdewallet, Blowfish is enabled, password is my login password. But it it is not working anymore…

Anyone know how to set the wallet as default or something? Thank you!