Lol I spent a week going back and forth with Revolut support in august. I could sign into the app but it would always ask me for a "selfie" verification and every time support would say its a super dark selfie.
Eventually I decided to try a stock ROM and it just worked and I realised what was happening so I transferred all of my money out and deleted my account.
Most local banks here are terrible at making apps, some even require a separate device that looks like a calculator to use online banking, so hopefully they wont follow suit anytime soon