authentication is garbage

From time to time warmane wants me to put in generated code to log in because i have 2 step authentication on. First code never works, it says it expired. Than i try again, i get no email. Then i try couple more times and i get 5 emails at once. I dont know wchich one to use. I use one it doesnt work. I put password again and it sends me another. I try it but it says its invalid. I do it until i have too many entries and i have to wait until "later" to log in. Your system sucks.

If it does not work with first 2 tries, wait a few minutes and try again. You should always use the last code you receive. But if it was received earlier, wait for new one.

perhaps it is the user that sucks. i've never gone through more than 3 codes. usually first one works.