Hello El Patron,
thanks for the answer!
My website is a multistore and the steps are a little bit different from yours so I had to search for the "Set shop URL" section under Advanced Parameters - Multistore.
I tried what you said until the url list of my pages under Traffic&SEO and I see that for the index page the rewrited url is empty. I saved it without editing but the trick didn't seem to work. I have also cleaned the cache as you suggested.
I'm already using the Classic theme
I have also tried the temporary workaround but I don't have that line on my FrontController.php. It might be different in PrestaShop 8.2.1 ? Just asking 🙂
I'm sadly stuck at the same point of before