Probleme to post and a 404

Hello,

Have you checked for a plugin conflict? Please deactivate ALL plugins except tagDiv ones; also, if you use a child theme or cache plugin, deactivate them, clear all cache, and try again.
Please check this guide, delete the object cache file, and check again https://forum.tagdiv.com/general-options-may-interfere-newspaper-theme/
Also, please provide the link to your website.

Thank you!