Hi, im kind of puzzled as on the M1 setup , first you must choose the country and remote configuration , then you see then remote skin and on the next step you get the video, just bare in mind that the M1 will not let you finish the installation if your cable box is not switched on and the correct cables are plugged in.
I would try to hard reset it for 30sec and try to run the setup once again ...
if the problem persist then i will install it once by using an Ethernet cable ( with any kind of source attached > dvd player....) just to confirm that A/V is coming into your slingbox and if that work
I would try to install it on a different wifi network
Country is irrelevant to the configuration
I get an internal error (P-16) when trying to configure the remote for Motorola DCT700. I am connected using composite cables (as the DCT700 only supports these connections). I get a good standard video and sound until I get the error message when trying to configure the remote. I am using Windows 10. I get a similar problem using an iPad mini.
I would appreciate any help !