room says my withdrawal needs game integrity review after one heads up session.

Won a few stacks heads up yesterday and went to cash out just now, but got a message saying my withdrawal is being delayed for a "game integrity review." Never seen that before. We played maybe two hours, nothing crazy, same stakes I always run. Opponent didn’t say anything weird in chat, and neither of us seemed tilted or robotic. I wasn’t multi-tabling or using any funky software, just regular browser with the usual settings.

Had this happened to anyone after just one heads up session? I’ve done withdrawals after bigger wins before, sometimes after days of play, and never hit this kind of speedbump. Starting to wonder what specifically triggers it or if it’s just their random script flagging things. Is it more common with heads up matches or is it tied to certain types of hands or volume? I get being cautious, but it feels like overkill for a straightforward session. Would be good to hear how others have dealt with this.