Will this be fixed? 😅

Hello all!

I have a situation and I was curious what other people recommend me do.

I have a Pixel 8a with GrapheneOS on it and have setup a separate user profile to have work stuff and my banking app on. At the moment my bank doesn't have a web interface, it exclusively uses the phone app to do everything. (apparently they'll be releasing the web version of the app next month but I have no other extra information on how it will work or whatever)

I've noticed that periodically they do some kind of scan that ends up blocking me from using the banking app (it locks it down with an alert that says something along the lines of: "your device might be rooted and compromised").

First time this happened I had to call them up and they sent me from one department to another and 2 days later I had access back in the app. Now this happened again (3 weeks since the first time) and I'm gonna have to call them up again.

My question is, should I buy a cheap android phone (I've been looking at the Moto E15) and lug it around just for banking and occasionally for the microsoft authenticator for work? Is this a common thing that people with a similar issue do? Should I just wait for the web app (problem with that is that all internet purchases have to be confirmed via the stupid app and idk how that will be handled when the web app rolls out)?

Sorry if this is the wrong place to ask this and thanks in advance to those who take the time to reply! 🙏😅