Category Archive Pages Not Working

On my site https://www.pickcasinos.com I’m having trouble with my category pages. On this page https://www.pickcasinos.com/casino-articles/ it links to Next Page at the bottom, but that link doesn’t seem to be working. In my .htaccess file I redirect /category/casino-articles/ to just /casino-articles/ so I’m not sure if that could be the problem? Thanks so much in advance guys!