Hello, C_Adele-reviews. This is definitely not the experience that we want you to have. I have been through my fair share of technical issues, and I know nothing feels worst than when you have several issues with no solution in sight. It would be my pleasure to work with you to get them resolved!
It does seem like most of them are Internet related, and we will circle back to those issues. I am more concerned with the black screen and freezing issue as it could be related to the health of your Receiver. What model receiver do you have? If you're not sure the model will be present on the front, left hand side of the receiver. How often does this happen? Are you noticing it on Live picture and recordings?