login not possible

[User 26942]

so I got my PineTab2 and started to tinker around including creating a second admin account with a strong password and also changed the password for the default admin incl the kdewallet. All went well until I tried to login with the new admin account. it does not matter what I enter I am getting for both accounts "Login failed". so how can I reset that?

Thanks.
"Has anyone seen my hammer"?