Might microG be causing me issues with Google 2FA?

So I just created a new Gmail address and I want to enable 2FA, but whenever I try to set it up with screen lock (fingerprint), Google gives me an (unspecified) error, that it didn’t work and I try again later.

I believe this process uses microG (or App compatibility as I believe it’s called now).

Any idea what might be the issue?

Regain your privacy! Adopt /e/OS the deGoogled mobile OS and online services

I idea with an eOS phone is to not use gmail on the device, why defeat it’s purpose?