PayCenter has discontinued FinTS payments on February 3rd, 2026: https://support.paycenter.de/artikel/wie-kann-ich-hbci-einrichten/

Since the Outbank app communicates with the bank via the FinTS interface, this unfortunately means that no money transfers with PayCenter is possible through the Outbank app.
Checking your current account balance and transaction history will, however, continue to work.