Due to a setting in my server I have to login using: private key, password, google-authenticator. This used to work. After reinstalling my Mac, it doesn't anymore. After logging in with private key, I get the "Partial authentication success" where I can enter a Password (but not username, this field is blank). After entering the correct password, I get the error "Interoperability failure" "Change of username or service not allowed: (<>,ssh-connection) -> (,ssh-connection). Please contact your web hosting service provider for assistance."
The problem seems to be that the username isn't carried on to the second screen (where I enter my password). I can also not add/change the username here.