After reinstalling the game (because it was taking 27 minutes to make 2 bags of flour), I managed to get all my progress back except for access to my co-op.
After searching for my co-op, it still shows my name under Members. I have tried requesting to join but I suspect they are not getting my request as I am still a 'member'.
There is no way for me to contact any of them through the game and I don't know any of their Facebook names or anything to contact them there.
I have been able to join other co-ops and leave them, but my name still shows up in my co-op's Members section.
Account number: 70326464559
(I am Ze in the screenshot)