I believe warnings get removed in a few months, at least from your statistics. But I don’t know if they are still there, but invisible. And there’s no magical 3 warnings rule. I’ve seen people mentioning here about getting banned after 1 warning, or getting 3 warnings and no ban. So I guess it mainly depends on how serious it was, like if one intentionally tries to scam or being somehow malicious, it might be possible to get instantly booted out. And possibly the time between warnings as well, especally if they expire in time.