iPad app not working

I went to play on my iPad today after not playing for a month or so and now it says “cannot play app needs to be updated. If not available in your App Store you must wait”. What is going on here? I already reinstalled and no luck.

Hey i have the same problem! Since yesterday. Just bought cards and now i cant play for a whole day. Whats happening?

It works now. Guessing Apple slow on patch approval.