Problems after moving website Domain owner and Hosting service

Hello guys.
I moved my site yesterday at 8 O’clock and still, i am having some problems on it cause it’s not showing the contents i use to have.

I really dont understand much about the topic but, i am seeing posts, plugins, etc from past. A friend told me he saw recent posts ( day 10) but now he is seeing again only post from day 5 below (and me too). I already visited whatsmydns and there was a check on every country listed. Already changed my internet provider and flush dns and still…

Btw, my site is: http://gamingnovato.com/

Pages are broken and the site is slow as hell. When i am not logged on site, i get error 500 internal, when clicking on a post, sometimes. I enter cpanel and i saw i am using 100% of the CPU 😮

This means my site DNS is still on propagation mode?

Please, i do not understand much abot this and i am still learning. A guy installed me this and thats all he did. Could some one help me please?

Thanks and sorry for my english..