Thank you for your answers, sorry for slow reply.
Your dish is ok, and if your VU solo operated it, there is no reason your new VU Duo 4k should not work.
I do not use the Black Hole image, but my understanding is that every enigma 2 uses the same command structure to operate the dish.
I suggest that you go back to your VU Solo and write down all the dish commands that were set up (or easier - take a photo of each set up screen. Then check that the Duo 4K has the same settings.
Another suggestion is to go to Menu>Setup>Tuner config>Positioner setup. Navigate to the Movement line, then use the red or blue buttons to move the dish east or west - does that work?
More thoughts - in the tuner set up screen what are your settings
Should be something like
config = simple
mode = positioner
long = 000.500 + west
Lat = 051.000 +north