Point your browser to the default IP address of the rocket hub. I believe this is http://192.168.1.1. That should present a login page to the MF28B's Web GUI. The default password is "admin".
On the home page of the admin interface, on the lower left side, there is a "Disconnect" button. Click on that button to have the MF28B disconnect from the network. That appears to be sufficient to enable a number of options that may be otherwise g...