How if you keep on winning and doubling your $80k profit? As you have said yourself that it is pure luck game, you cant prove that your account is flagged and adjusted to lose just because you lost what you have won before. Nothing you can do except accept the fact and blame yourself for not stopping after you made decent profit.
Do you know how to read? When you start winning they flag your account. This isn't a quick martingale on high bankroll. These are small batches of bankroll put in play over hundreds of thousands of rolls.
I know Primedice is a legit casino and they won't just flag someone's account just because they are winning but there could be an exception with this and that is if they think those wins are not won in a fair way. The guy above is right that you should have stop by the time you are winning too much.
Don't you ever think that you can make unlimited amounts in this site or on any other gambling sites because that is just not possible. Another thing that got my attention is your reload. Why you only got 25 USD is you have wagered millions? I think that's crazy and not really possible but again maybe they intentionally did that because they found out that most of your bets/wins are suspicious.
I have one account. I've come first in the races a number of times this week - and yes my reload is $25. It's a game of dice, how could I cheat in any way? You are literally justifying their scam.