500 page error for staff only

Seth -

Try disabling CloudFare. I as well have been having issues with Chrome and GoDaddy, but it seems to be chrome that is causing the issue and nothing more. I was contemplating getting away from GoDaddy because I thought the server was the issue, but talking to GoDaddy support is like talking to Steven Hawking, so I'm going to pass on that. Besides, I got a pretty good deal for my current hosting package.

In addition to this, have a look at your .htaccess file. See if there's anything unusual in there. I am familiar with this popping up on Wordpress when it goes awry, but I don't think I've experienced it with MyBB.

It's either CloudFare or your .htaccess. Try viewing from a browser other than chrome, and if the problem still persists, you need to have an in-depth look at your .htaccess file.
EDIT:
P.S. I think it's time for a new partner..
EDIT2:
Aside from the above, you seem to have more underlying problems. Login attempts sometimes fail with a 403 error.
yourhiddenwebs.ite//403.html
Forbidden
Multiple Requests Targeted On Server.

I'm still edging towards an .htaccess issue.