This is something we recently started doing. If email sent to your email address bounces with an error message like, "This email address doesn't exist", then your email may eventually be changed to u...@bounces.invalid. (It's not possible for users to change their email address to something ending in .invalid, so this can only be an administrative change.) Because your old email didn't exist, somebody could've registered your non-existent email address and used that to steal your account.
LOL theymos. You could have warned us instead of silently doing this so we don't get scared. My email is the correct one and I always receive emails if I get any private messages. I am sure Wapfika's soul was out of his body for a moment when he saw the new email was set on his account. But it is good that he enabled 2FA.
We have been seeing accounts getting compromised and those accounts were used to ask for a loan but the hacker didn't try to steal the account. The good thing is you have already implemented 2FA. Every user is advised to enable 2FA if they doubt about their security.