It’s not the hosting, it’s their latest update which left out a slash before “.htaccess”. In my case the plugin is looking for the lines and tries to add the lines in “public_html.htaccess” instead of “public_html/.htaccess”.
This is most probably because this:
$home_path . ‘.htaccess’
was supposed to be this:
$home_path . ‘/.htaccess’
in all instances under wp-super-cache.php and rest/class.wp-super-cache-rest-get-status.php files.
If you add the mod_rewrite rules manually to your .htaccess the plugin will work and probably they will push an update fixing this crap.
