Another evidence for the suspicious behaviour of coinpot.co multiplier:

How could I roll more than 30k rolls and skate LESS than 30k???

Did you give 15 minutes after your end of your gambling to let the stats update? Sometimes, they are slow to update. Like, I will roll 10k times, but the stats won't update until 15 minutes later.
Yes, you're right. At the end of the day I reviewed and I've played more than 30k rolls as you said. Thanks!