Hello! Have you checked:
Let us know if these are all checked and it still happens.
thanks yes all those products are set to active and are available and they are not out of stock,,,i dont know about the liquide thing and seo, if u can explain more thanks
Sorry for late reply. I hope you have solved it, but if not you can change the URL and Handle by following these steps:
For example, if I sold an item and gave it the handle big-pink-flowerpot, this handle would show in the URL after /products/.