> "it actually does not imply adding a phone number" It actually does. The sentence you quoted contains the link "enable 2-factor authentication", which goes

> "it actually does not imply adding a phone number" It actually does. The sentence you quoted contains the link "enable 2-factor authentication", which goes to a page where adding a phone number is the FIRST method described. "There are three methods to choose from: Text message, Authentication app, or Security key..... If you don’t already have a phone number associated with your account, we’ll prompt you to enter it."