Cant use market

Have had 2way authenticator on for over 3 days but still cant use market.

Did you donate? Minimum of 10 coins has to be donated on the account and you have to have it enabled for exactly 72 hours.

Yeah donated more than that and it has been active for over 72+hrs.

Which realm are you on? Do you have a lvl 80 character?

Frostmourne and yes

Do you get some sort of error or you can't use it in general? Can you post a screenshot?
I know that marketplace wasn't available instantly on Frostmourne in its first season.

It literally says i havent had the authenticator for more than 3 days when im trying to buy items.

Then you haven't.

Check the history, maybe you still have a few hours left: https://www.warmane.com/account/history

Had it active for 74hours to be precise, i guess its something they update manually?