I must admit, I'm having issues as well. Whenever I click something to buy in the shop it just shows up as "Purchase Fail" instead of getting the LP popup I usually get :unsure: anyone else having problems, or potentially knows a way around this error?
I was able to install the game correctly with the new UNSIGNED apk, however I was met with an error when I tried to login using GMAIL as shown in the screenshot, any help much appreciated.