Amazing game but one problem

That one problem is like do u guys know how long it takes to get 50 dragon stones like for real it takes almost a whole week to earn 50 so once u get 50 u go into a multi summon and it says 100% a sr or above so u summon and get some r and some sr and maybe some n THATS ALL u dont get no ssr IT SHOULD BE A 100% CHANCE FOR A SSR IN A MUTI SUNMON.

Satcomsgt about DRAGON BALL Z DOKKAN BATTLE, v3.0.1