Its a great game and a great app to spend your time on, but its been months since a last played this game because i can't update it. please fix this update thing, i don't want to make another account

I love the game it's just that i can't get it on my device so i used this app to play it but now it's saying it needs a update and I can't update it

I have been playing this game for a very long time, but now it tells me to go to update the game, how can I update it in this app??