I having serious problems with the loading of my site

Hi wondering if someone can assist me. I'm developing this website:
http://www.latenightgroup.nyc and for the last couple days I've have major issues just updating basic pages and posts.

Pages etc simply not loading!
I've cleared my cache, deactivated plugins, plus there is barely anything on the site re. content.

Just not sure what to do.

Any assistance would be so greatly appreciated.

Mark Moore