MobilePay reported issues with payments. We are following their updates: https://status.vippsmobilepay.com/incidents/42wq3h6zy8tf
Vipps own description:
Vipps/MobilePay is experiencing problems with Passthrough payments, ePayments, and this affects some users. We are working on resolving the issue, and will send an update as soon as we have new information.