@f-albert thanks for fixing this problem. We can select the project thumbnail and place it in the category page. Sometimes if we update the category page, some of the thumbnails with a mouseover image are disappearing from the page. But if we update these projects with the mouseovers, they are appearing again. So there are still some bugs but we can work with it and build the website. Thanks for your help.
S
StudioBureau
@StudioBureau