Brawl Stars: Sudden Drop in Gems from 40 to -5142

I recently encountered a major decrease in my Brawl Stars gem count, going from 40 to -5142, and unfortunately, the problem has not been resolved yet. This issue is preventing me from purchasing the costume I wanted and is significantly impacting my enjoyment of the game. I require urgent assistance in restoring my gems to their previous state and resolving this issue. I would greatly appreciate your assistance in promptly resolving this issue.