If you are unable to verify your Schibsted account using BankID, it might be because you have already used BankID to verify another Schibsted account or because your Schibsted account has been verified with someone else’s BankID. The error message you will receive then is that you are already verified on a different account. Contact customer support at FINN.no and they will help you find out what’s going wrong.
BankID and BankID on mobile phone is locked to your social security number and you can therefore only be verified on one Schibsted account.
If you think there is something wrong with your BankID, you can get help here:
https://www.bankid.no/privat/los-mitt-bankid-problem/