Why does WordPress Editor Only Use Half the Box?

I do believe it’s because of the theme. Does your theme did this before or did this happened after you tweaked something.

If you tweaked something out of curiosity, backup your *.css files and put a new one via FTP or via your file manager.

There are numerous protocols for reaching your Cpanel. Try the following:

  1. YourIPaddress/cpanel eg. http://85.13.219.117/cpanel
  2. Or the easiest is type YourDomain.com:2083. If that didn’t work, try YourDomain.com:2082

Take note to replace YourDomain.com with your domain or IP address.

Go to your your public_html on your server or via cpanel > file manager or look for any files that end with and replace it with a fresh one. You can find one on other themes.

But if your not sure of what you’re doing, simply go to ../public_html/wp-content/themes and rename the folder on which theme you’re using. After that go to your WordPress admin and reinstall the theme.