Cant log in, unplayable game

Since the March 24th update I cant log in my google account in the game so I cant even get to the game and play. I get "Unable to authenticate. Please try again later." Ive tried logging in with other accounts and it doesnt work either. I have a iPhone SE so the device isnt the problem, please solve the issue for the players who are blocked out of the game for no reason!

Caliloula about Pokémon GO, v1.29.1