I have a multisite environment where only the super admin can access Meta Box AIO menu options. Those in the admin role get a not authorized screen. Is there a built-in role manager that I am unaware of? This is a fairly vanilla WP install aside from being multisite and the license key is applied to all instances.
Do you see the administrator can manage plugins (activate/deactivate) on the multisite environment? If not, I see it is expected behavior with Meta Box. You can go to admin network > Settings > Network Settings > Scroll to the bottom and enable the option "Enable administration menus: Plugins" to allow administrator to access Meta Box AIO setting pages.