played red black only for bonus and now casino says low risk betting not allowed

so i did one of those match bonuses, didn’t even look at the fine print. just thought i could flip it quick playing red/black roulette till i cleared the wager, figured i’d burn some time waiting for the wind to drop at work. now the casino emailed me that “low risk betting is not allowed for bonus wagering” and my balance is locked up pending review. i guess they’re saying flat bets on even money don’t count, or maybe worse.

pretty annoying since i didn’t lose and didn’t win much, just a few tiny swings. makes me wonder how strict other places are about what counts as “low risk” with promos. always feels a bit gray area - like what do they expect, people purposely betting into big swings? anyone have their withdrawal actually denied over this or just held up for a few days?