@oliveradams thank you so much for sharing that you managed to get your banking app to work by using a different browser to log-in. I did the same for my banking app - and it worked!!
Like you, I didn’t manage to fool MobilePay though.
Side note: It’s funny that the company, that stores my money and payment cards let’s me install their app on a rooted phone, but the place that just stores a reference to them does not