My Brawl Stars Diamonds Disappeared After Opening Mega Boxes

Yesterday, I opened two Mega Boxes and received 100 diamonds. However, when I logged back into the game an hour later, the diamonds were gone. I’ve been a loyal Brawl Stars player for years, but recently, issues like this have started happening. I initially suspected that someone might have accessed my account, but there are no signs of any purchases or changes to my account. I’m requesting urgent assistance to resolve this issue.