Post not showing when it should

Hello.
Yesterday I tried to create a new category that shows posts on new page. https://www.allinarabic.com/%D8%A8%D8%B1%D9%86%D8%A7%D9%85%D8%AC-%D8%A3%D8%B3%D8%A8%D9%88%D8%B9%D9%8A%D8%A7%D9%8B/

I did add some posts but for some reason it does not show in the page, while the other categorys do show. I checked the spelling, tried it 3 times. Searched on google but found nothing.