Trick for you: get alot of gold (100m+ barely enough) and buy all shop items, stay in the game like 4 5 hours, uninstall mod version and install original one, play untill you see your google play is logged in, now quickly uninstall original version and reinstall mod version go spam buy/summon untill you see your google play logged in (idk why it can in signed apk but it does) then choose Save to get your progress transfer to original apk, uninstall mod apk and reinstall original, when the board show up you have previous save from your googleplay progress select download it, and then you can enjoy your game with new updated features with your mod version