Sportsbooks often set betting limits or review accounts due to factors like...

https://betmentor.com/blog/welcome-until-you-win-how-to-avoid-getting-limited-or-booted-by-your-sportsbook-976

Sportsbooks often set betting limits or review accounts due to factors like your Customer Lifetime Value (CLV), helping manage risk and fairness. To avoid delays, keep your KYC documents accurate and your payment details matching your account name