Polymarket is facing allegations of market manipulation following a controversy involving British YouTuber 'Lord Miles.' Rumors of his death during a 40-day fast led to significant fluctuations in betting odds on the platform, with odds of his success plummeting from 68% to 6%. A statement attributed to Miles claims he is alive and detained in Saudi Arabia on false charges. In response to the controversy, Polymarket has extended the betting deadline to September 30 and clarified the resolution criteria. However, users have accused the platform of changing rules and committing fraud. Neither Saudi authorities nor the challenge's sponsor, Monarch, have confirmed the claims regarding Miles' status.