There are no known issues with any hosting provider that would prevent CodeGuard from accessing a user's site - meaning that you should be able to backup your site regardless of who your hosting provider is. Below is a list of a few hosting providers with whom our users have had success backing up sites. If your hosting provider isn't on this list - don't worry! It's not comprehensive of all the hosting providers - just a sample of the most popular ones.
There are some site builder companies that do not grant access to your website files via FTP or SFTP. We are not able to back up those types of websites. The following is a list of some of those companies. Again, it's not comprehensive, but a sample of the most popular ones.