So it turns out that my bank doesn't like Lineage OS. But they allow me to use the app on a tablet that is 5 years out of date and hasn't had a security update since Huawei was expelled from Google.
Where is the logic?
I'm moving to a different bank who isn't so peculiar.
PS: my tablet is safe enough. Its behind my VPN and 🤷‍♂️, I'm leaving the app.