"JoJo's Pitter Patter POP!"

[Wyvernium]

Name of Game: JoJo's Pitter Patter Pop!

App link: It's a Japan-only app, but supports play for users internationally. I had to download from a 3rd party to even install it. It's from Qoo-App if you're residing outside of Japan.

Have you tried GG?: Not personally, but if someone has, please let me know what to look for.

I just want to know if the gems are -- as usually the "premium currency" is -- server sided or not, and if not, how to hack it in some way, shape, or form. Even if it's just re-labeling the amount given for completing a level that can be hacked, please help me with it!