For people using boursobank, I was unable to use the app with eOS 3.7.1 (and too lazy to try the various workarounds listed in this thread) but I realized the web application is actually quite usable on a phone and they added the possibility to register passkeys/webauthn tokens for the 2fa.
I’ve registered my phone as a passkey and my yubikeys as backup and I’ve been able to login on the web app since without needing the android app. I can’t say for sure whether this makes the android app completely unnecessary for every operation, but so far I haven’t had any issues.