Exactly, so you're complaining about bans with a flagged IP. "Client must be detected boys" I'm not saying Jagex is constantly monitoring what clients people use, but since my ip is flagged, maybe they were keeping an eye on my client usage?
Here let me prove I read: what sense does it make to monitor what client you use if your IP is flagged, but not upon logging in regardless if flagged or not? That'd terminate botting right away, but for 1) they can't do that because the legit game clients with modifications use the same methods as botting clients to run Runescape, therefore multiple people would be false banned