Is it my version of WordPress

I am using 4.4.2. When I try to add a theme (only have 5), the “Add Themes/Upload” menus don’t work except for “Premium”. It goes to paid themes as it always has. “Featured”- “Popular”- “Latest”- “Favorites” don’t work. I also cannot upload a theme that I downloaded. When I click on them, nothing happens. It was working yesterday 02/14/2016. I my version corrupt? I have reloaded twice already and everything else in wordpress works. I’ve tried Firefox and Chrome and they both have the same problem. I also noticed that there is a new interface for some of WordPress. Help!