Hi, I have the same problems. My sites won't load, neither are the admin pages accessible. (They keep showing server where this page is located is not responding.)
I did no changes to the site, except include new text content.
Hosting company says nothing wrong.
Tried with different browsers and devices, same problems occurs.
Cleared cache, repaired permissions, changed DNS records - still the same.
I use themes from ElegantThemes.
Please assist... :(