Your tv is upgrading to pixel phone
Update latest portal url
Did you ever get this fixed. I have the same issue.
I had this issue and it turned out the problem was with my profile portal url. Once I updated that, it went away and everything loaded as normal. I would contact your provider to check that url hasn't changed
This probably is common sense but, have you reset the box to default and install it again?
Do you get the line through the TV with other sources plugged in or just stb?
Honestly, STB is just an emulator. Never expect emulation to work as good as the real thing.
Try resetting your box and let us know