I don't understand why you thought that adding banking app to DenyList is not needed - you can read that here in every guide and every answer to sime newbies asking the same every few days (there are really tons of similar posts/answers)With Magisk installed, in order to make banking app work I had to:
enable Zygisk, install universal safetynet fix module, and also enable deny list and add banking app to it (I thought this last one was no longer needed...)
Infamous banking app finally ran and began registration stuff. But the app is unable to scan the needed qr code: the "screen" is just complete black instead of the camera looking for qr code.
Do you think this could be related to Magisk further settings, or is it purely app's fault?
Thanks.
(I read that, supposedly, there were 3rd-party qr code apps which were able to scan the qr code and open it with another installed app, which supposedly could work for cases like this. Do you know something about this?)
Anyway, don't know if scanning QR code is maybe related to USNF
You could try using Google Lens (available on Playstore)