Using Protonmail Email on IG Account?

What if you create an IG using Protonmail or switch a Gmail email on IG to Protonmail? Will anything happen? I’ve read various places online where people who have done so report being banned from IG right after, but some have said nothing bad happened. Has anyone tested this recently?

0 problems with proton on my main IG.

Made it with Proton or switched to a Proton email? And what year did you do so? Thanks mate.

Switched like a year ago. But acc is old already around 8 years