I purchased a VU+ Uno 4K a few weeks ago (genuine box from WOS), normally I just use the remote control to switch the box on and and off, I have just notice that the button on the front of the box with circular rings does not switch on or off the receiver. I also have a VU+ Solo 2, it has the same button on the front of the box but on that receiver it switches the set on and off. I'm not sure if the button on the Uno 4K has been disabled by design but would appreciate if anyone has this box to tell me if theirs is the same. There is nothing in the openvix settings that I can see to enable/disable this button.
Cheers.