404 error after Polylang update

I’m currently experiencing a problem with Polylang plugin. I have a bilingual website (French / English) and I’m using Polylang on it for 2 years and half now. Until it was easy you could switch easily from the French version to the English one by clicking on the flag. The URL was the one I choose when I created the post (ex: fringinto.com/french-post to fringinto.com/english-post. But since yesterday (after Polylang update) when you you switch from French to English the URL is : fringinto.com/en-english-post. Except this URL doesn’t exist so I find a 404 error.

I’m confused so if anyone is experiencing the same problem can you help me please?
I hope my explanation is clear, if not feel free to ask for more details.
Have a good evening 🙂

The page I need help with: [log in to see the link]