Allow agency and sub-account level access its Cpanel if they subscribe to your WordPress hosting. WP migration and other app has limits in terms of file size to migrate. Other web hosting like godaddy, bluehost does allow their users to access cpanel, you should grant us that access.
This will allow us to get our files in file manager, and sql file so that when a client decide to migrate its site outside of GHL it will be easy. No need that plugin.