Blizzard Authenticator??

So even though I'm signed into the website on my PC, when I try to log into game it keeps giving me the Blizzard Authenticator popup. I use the code I get in my email and it doesn't work, and sends me a new email with a new code, I use it, it doesn't work, rinse and repeat. What am I doing wrong here?

For clarity, I'm using the TBC client.

Seems to be fixed now. Idk what is different, I did the same thing as before but now it works? w/e

if you do not wanna use any code to enter in-game you need to go here: https://www.warmane.com/account > security > and remove "enable in-game protection"