Zulfiqar
Resolver VI

Aslam u Alaikum ,

What steps you followed to delete the categories and posts? Which WP theme you are using?

Please follow these steps,

1. Go to Posts> Categories and  delete all categories.

2. Go to Posts > All Posts and select all posts to delete.

Other option is CPanel. Goto mysql database and delete your posts and data from there.

Zulfiqar Anees | Founder/CEO at FastTech Media, TechMag, TechKnowable, and ZulWeb | GoDaddy Pro.