Ive tried both methods... Orignlal APK and obb from Playstore, play a round, earn gold, changed obb name and uninstall APK.
Then Rename obb to original name, install your signed APK, and it just freezes.
Ive also tried your apk and your obb, still frezzes... I think more people are having issues then not...
Can someone post a screenshot showing unlimited gold etc?
Despite all this, I do appreciate all your efforts, so please don't take my comment the wrong way.