After exiting a battle that just finished, I was awarded 717 crystals. When I go to my garage, it only says I have 7 crystals (the amount I had before the battle). The correct amount of crystals appear once I purchase a supply or any other item (most of the time). This bug forces me to purchase an item in order to purchase a more expensive item. I purchased two different ammunitions (for 0 crystals), then the correct amount of crystals (724) appeared. This has happened to me several times already.
Customer support service by UserEcho