A little problem with two-factor authentication

It seems to me all the time to enter two-factor authentication within the game, when I open the game I must be opening Chrome to access my email, when the game takes me out for maintenance I have to put it back in, when I have to restart in moments of bugs the authentication appears again, if I enter the Two-Factor Authentication verification, because it keeps appearing again, it is a pain to have to open Chrome all the time, even my friend entered the Authentication email code and it didn't show him The Authentication message appeared again in the game no more, every time he enters it does not appear, but why does it always appear to me? And how do I so that it doesn't appear every time I enter the game?

I am only able to log in to one of my accounts since it does not say witch email the code is sent to im locked out of 4 others because i did not write this down since i have been logging in to them for years without thinking twice about it and cannot remember the emails ..