How can I get this app to work on /e/?

I can’t use this app. This app is a banking app that receives a two-step verification code.
I am able to install this app. However, this app will not let me use it, saying that it cannot be used for security reasons because the OS is a custom ROM.
How can I get this app to work with /e/?

Banking Apps are notoriously problematic, so they come up pretty often …

It’s just a mistake.

What exactly is the solution I have?
The problem is caused by the app detecting a custom ROM.
I can install it.But the app detects that it is a custom ROM and won’t let me use it.

If you don’t find a solution via the search, perhaps there is none other than using the stock Android for your device, or not using the banking App.