Power ups need fixing

This game is really great and I got hooked on it in no time. I love DBZ games, and this one is truly fun. The only problem is that I upgraded my 2x gem stat about 3 times and it seems that not once has a gem been counted as two...instead of getting double gems, it still counts by one with the power up. Please fix and I will 5 star in no time :D

Mozart the 22nd about 3D Super Saiyan Evolution Battle Run- Unofficial Dragon Ball Edition: With Goku, Piccolo, Gohan & Vegeta