Grey/white screen after sign in, Android, v2.73

Issue: Grey/white screen after sign in

How to reproduce it: Sign in with email or with Google

OS: Android 11

Device: Samsung Galaxy Note 10+

App version: 2.73


I removed my expired card from the Curve app and wanted to add renewed card there.
But after I removed the card I can’t sign in to the App. After signing in the App’s screen becomes grey, if I tap on the screen it becomes white.
I reinstalled the App some times, I cleaned the App’s cache, it did not help.
I wrote messages to the Curve support on 29/06/21, on 01/07/21 I sent them a video with this bug, but the problem is not resolved.