Support

No, it's not. I am using it on all of my live, test, and development sites.

However, you need to remember a few things:

• If you are using OpenLiteSpeed (not LiteSpeed proper) IT IS BROKEN BECAUSE OF A DELIBERATE LIMITATION IN OPENLISTESPEED (namely: OpenLiteSpeed does not allow any conditionals blocks, applying all .htaccess rules indiscriminately, which breaks even Joomla's built-in and recommended .htaccess content you can find —along with the warning I personally added upon discovering this problem— in htaccess.txt at the root of your site). I see that your sapi_name is "litespeed" which, unfortunately, is shared by both OpenLiteSpeed (broken) and LiteSpeed (working). Ask your host which one you have. If you have OpenLiteSpeed, sorry, find a better host which doesn't use a broken web server to save a fistful of dollars per hosted site.
• Not all .htaccess rules work on all .htaccess hosts. Did you read the documentation telling you that and what to do?
• Make sure that your $live_host in your configuration.php file is empty like this: public $live_site = ''; This should be empty unless you are on a broken server which does not pass the HTTP Host header to PHP.
• Make sure the host you are using at the bottom of the .htaccess Maker's configuration page matches the hostname of your site. If you have a non-www to www redirection (or vice-versa) set up it needs to match the final redirection set up there. For example, if your site is example.com and you have a non-www to www redirection you are redirecting users to www.example.com, therefore that's what you need to use in the .htaccess maker configuration.