Could provide a link to your blog?
It seems to be an issue with your web host:
View post on imgur.com
Try contacting them?
Website is working perfectly now, but the problem seems to be happening because of Better WP security plugin.
If you are not able to see “Editor” within “Appearance” tab, you must had installed any security plugin. I faced the same issue after installing a plugin named “iThemes Security” which “Protect your WordPress site by hiding vital areas of your site, protecting access to important files, preventing brute-force login attempts, detecting attack attempts and more.”
You should deactivate any such plugin to see the “Editor” back in “Appearance” tab. Hope this helps.
