Firstly you will need to have MicroG installed and set up correctly. Just search for MicroG here on the forum. I installed Vipps from the Aurora store and it works out of the box without any issus on my C2. I don’t remember if you need BankId for the setup or not. The DNB app is not working at all. It installs without any errors but crashes as soon as you try to log in. I have not tried to start the app in the terminal so I don’t know why