Can't log on to pvp

Hi am having problems with pvp that I can’t even challenge anyone I click the button to find an opponent but after 1 second it just takes me if the screen and back to the town I last visited… Can anyone help with this. I have enough monsters to do pvp…I have enough tickets. It just will not allow me please some 1 help

Restart the app. (Don’t delete it, just force quit and restart)

Then make sure you’re logged into gamecenter.

I had the same problem a while ago i don’t remember how i fixed it i am pretty sure i had to wait until an update to the game but i fairly certain if you sign out of gamecenter and THEN restart your device then sign back into gamecenter you should be able to have pvp and all them work again.