Hi,
I recently started using GrapheneOS. At the beginning I was worried that my banking apps wouldn't work, but thankfully that wasn't a problem. But sadly I got problems with other apps. One app thats refusing to work properly is my health insurance app "Meine AOK". Another one is an app of a supermarket chain ("REWE"). I think that both apps have the same problem. When clicking on login, an login form opens in my default browser as an integrated window in the app. I enter my credentials and hit login and afterwards, an error occurs. The REWE app says that the requested page couldn't be found. The AOK app says that an error occured and that if I'm not using Google Chrome or Safari, that I should check if my browser has the newest updates and support universal links.
I installed the apps on a profile without the google play services and on one with the services installed. I tried different browsers too (Vanadium, Brave and Chrome). Also tried the option to deny apps to open links in the embedded browser and instead open the browser app seperately. Another thing I tried was that links that the browser opens are opened in an icognito tab to avoid problems with cached stuff. Didn't work. I also tried the app compatibility guide, sadly it didn't work too. Does anyone have any ideas?
Thanks in advance