I called Host Gator and they made some changes to the htaccess file.
The site still says You already have the latest Joomla! version, 2.5.16.
This is a really old site that I kind of let fall behind. Is it possible to update the Joomla? Or should I just re-build the site? I don't like how it looks anyways.
Hello,
Deprecation errors are pointing to problems with your php version, and probably preventing parts of the backend to work. Check with your host to see what version of php your server is running.