My Raiffeisen ELBA-App doesnt work anymorw since i downloaded ios 26 beta 3 i cant open the app pls fix it because its my only banking app
ELBA-APP doesnt work!!!
You've installed a beta version of iOS 26 on your primary device. There are going to be issues with third-party apps, like your banking app, because they were written to work with iOS 18, not iOS 26. Most apps work fine, but some apps need updating to implement new features, or to address bugs that the newer version of iOS uncovers.
You should never install a beta OS on your primary device, for exactly the reason you've discovered.
Apple cannot fix your banking app unless it is a bug in iOS that's causing the issue. The developer of the app will have to update their app to work with iOS 26, but they cannot release it until iOS 26 is released around September.
I suggest, if the banking app is important to you, that you downgrade to iOS 18.5, and I really hope you took a backup before you installed iOS 26 beta...