Anyone play Stick Tennis on Android? Can't order the full version.

[fuzzybabybunny]

So this is easily my favorite game on Android. The problem is (I think) I'm traveling in China and for some reason I just cannot for the life of me purchase the upgrade to unlock the full tournaments. When I click "Buy" I get the rotating busy icon and it just sits there forever. I even try doing this via a VPN located in California and it still won't go through.

I can't seem to buy it from the Play Store either since the purchase can only be made inside the app. The Play Store only has the free version.

I've also tried re-installing it.

Anyone have any idea how I can make the purchase work?