Blog posts mixing up and images not showing

Site URL: http://thetaoofdavid.com

Hi

I've just made my website live. I have 3 seperate blogs, for example Travel, Work and Live. Since making the site live, 2 of the Work posts have been replaced by other blog posts from other pages and the third past now has no images displayed.

What's going on?

I didn't see a work nav button at all. 

This is a serious and widespread issue that we have been dealing with on our site since March. Blog posts keep becoming scrambled, images are disappearing, and old deleted drafts are self publishing. We've opened multiple support tickets to no avail.