During our live testing of today's release we encountered a serious compatibility issue with Google's Play store. As fixing the issue was taking longer than hoped, we have rolled back the release and have opened the game back up again. We are working on fixing the issue now and will try to push the release later today our tomorrow morning.
In better news, the iPad version of Kingdoms CCG has been approved by Apple and has tested perfectly. As soon as we're able to deal with this Google Play issue, the iPad version will be made available as well.