I'm facing the exact same issue.
The app worked fine a month ago and now either crashes or redirects to the above mentioned website. I'm not entirely sure what caused the change in behaviour, but guess it is due to an app update.
The app is installed in the main profile of my phone. Installed via Play Store with Google account logged in.
Changing any of the recommended settings (including Secure App Spawning and Exploit Protection Compatibility Mode) does not fix the issue.
I don't get any notification about Play Integrity usage either when trying to start the app.