What should i do?
It looks like there was some security breach on Binance exchange causing thousands of users to receive email about 2FA login error, and binance moderators on reddit are deleting any posts from people talking about it.
I would not keep any coins on Binance exchange now, they are constantly under attack and regulators are pushing them hard all the time, so I expect to see some big hack happening soon, this is just my prediction.
https://twitter.com/JacobKinge/status/1422992271822176259