HOW DO I REPORT THIS BUG

I ranked up earlier and went up to 90 gems but logged back in and went back to 60. Plus I watched a few ads yesterday and lost about a total of 250 gems. I need help😭😭

I ranked up earlier and went up to 90 gems but logged back in and went back to 60. Plus I watched a few ads yesterday and lost about a total of 250 gems. I need help😭😭