Banking apps on Sailfish OS

Hello. A month ago I had to flash my XA2 for the first time ever. Afterwards everyrhing worked fine- also update to 4.6. 2 weeks ago I installed Klarna android app again. The App works in principle. But für the wallet I have to redo the identification procedure again and again. After reidentification I can use the app until I close it. Has anybody similar experiences or a workaround? I dont know what caused the app working properly.