Sportsbook operators have been known to unilaterally refuse to take bets from customers who are consistent winners.
This creates a no-win situation for bettors. Either you lose money, or you are cut off from any chance of winning, once you start to win.
Suggest you have a regulation to the effect that if an operator wants to restrict a customer's bet amounts, or deny them the right to make any bets at all, that the burden of proof is on the operator to show why this is justified.
If the operator ignores these regulations and denies customers the right to bet unilaterally, suggest they be made to make cash reparations to the customers.