My game has lost connection to game center

Ive been playing for about a week, spent some money on credits and this morning when ive opened the game it is opening a brand new game saying its not connected to Game Center. I click not the link game and i get a warning saying you already have this game linked to Game Center and you will lose all your data if you sync this new game (obviously). How do I connect to the correct version? I’ve restarted Game Center, turned the ipad on and off and still the same. All new updates installed

So i downloaded the game on my iPhone and it immediately connected to Game Center. I’ve uninstalled the game on the ipad, signed out of Game Center, turned off the ipad and then done the opposite (signed, in, installed game etc) and it still doesn’t recognise the Game Center account
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