I have connected my Cerbo S GX to my B&G Vulcan, with ethernet cable and adaptor cable. I have followed the instructions about setup of The Cerbo on the display. The icon for the Victron app is present on the MFD display, but when I click on it, all I see is a blank page. I have tried update on the "home" button on the MFD, but all to no avail. Is there a trick somewhere in the setup, that I am unaware of????