Just got limited after a good run… is this normal??

so i finally hit a decent streak on the sportsbook side after messing around with live tennis lines, nothing super wild just small parlays and a few live unders. logged in today and noticed i couldn’t place more than like five bucks at a time. limits got slammed down hard, and this is on a crypto-friendly site where i figured they’d care less about small timers like me.

my slots action isn’t really hot either, and i don’t try to bonus hunt or anything. just a few solid weeks betting pretty straight up, maybe i looked sharp on the data or something? how common is it for accounts to get hit with this kind of limit after just a bit of success, especially with crypto books? anybody have tricks for flying under the radar?