Login problems in the app
Login problems are usually caused by one of these four things.
1. Wrong username or password
Your login details are the same as when logging in via the browser. If you have forgotten your password, select Username in the app and then Forgot your password below it. Then identify yourself with your bank credentials or mobile certificate.
2. Outdated app version
Check for updates in the Play Store or App Store and update if needed.
3. Network problems
Login can fail if you use a VPN or public WiFi, or if you play from abroad. Try your device's own network connection or turn off the VPN.
4. Biometric login does not work
Log in with your bank credentials. Go via your profile (the person icon at the bottom) to settings, select Devices and remove all devices from the list. The next time you log in, the app will ask for your fingerprint again.
If none of this helps, delete the app and install it again. If needed, contact customer service and tell them your device's exact model and manufacturer. Remember to mention that you have deleted the app and downloaded the latest version.