WordPress 404 Error: Help Needed

I’ve been having continuing problems with 404 errors on my new site: Fantasy Baseball Forecast (https://fantasybaseballforecast.com)

Sometimes, it loads fine, other times I get the error. Sometimes, I get the error on the Mac but it loads on the iPad (or vice versa). Sometimes, it loads in Chrome but in Safari (or vice versa).

I polled friends on FB and six said it loaded fine and three got the 404.

Thusfar, I’ve tried recusing my directories and that seemed to work but then the error started happening again. I did change my permalinks a few days back. But since I have deleted the .htaccess file, which was recreated fine, so that should no longer be an issue.

Bigger problem is when this happens, I can’t even get to my admin page to turn off plugins, etc. Are there plugins known for causing 404 errors?

I’m using the Coraline theme and it is hosted on HostGator.

Any help?