I created a co-op on a windows pc & I've been playing on android phone. I can't find the co-op on the windows pc from my android town & I can't invite as a friend from windows to my android town & vice versa. Are they always separate? In order to have 2 towns I have to either play both on windows pc or both on android? Or is there another issue? I've used the town code & friend invite codes & they don't work.