Re: cannot access site
It's almost certainly your "few chat widgets" that are causing the problem. You may have other plugins for WordPress that are contributing to the issue. This isn't something to be fixed at this end -- you are using more than your fair share of server resources, and that's what is causing the "resource limit hit" problem. Please see the High Resource Usage wiki page for more information on how you can solve the problem.
“Beware of bugs in the above code; I have only proved it correct, not tried it.” --Donald Knuth
"It was as if its architects were given a perfectly good hammer and gleefully replied, 'neat! With this hammer, we can build a tool that can pound in nails.'" -- Alex Papadimoulis (on TheDailyWTF.com)