Hello James,
Thanks for writing in!
Please be advised that you do not need to register SuperFly Menu since this is a bundled plugin. We will be the ones who will be providing the updates of this plugin.
If you have errors in installing the plugin, your server maybe blocking the connection to our plugin server. To assist you better with this issue, would you mind providing us the url of your site with login credentials so we can take a closer look?
To do this, you can create a secure note with the following info:
– Link to your site
– WordPress Admin username / password
To know how to create a secure note, please check this out: https://theme.co/apex/forum/t/how-to-get-support/288
Thank you.