The French press is now full of rumours about who cheated and how, with suggestions the contestants were having secret dinners at a local motel when they were meant to be fending for themselves.
— Tom Hourigan (@TomHourigan) December 15, 2021
The €100,000 prize money has been given to charity.
Here's one write-up. And here's the Wikipedia page, which summarizes prior scandals on the show, but not the current one yet.