The 3.1.1.2 Service Unavailable error and pixelation are both symptoms of a signal issue. Contact Cox and schedule a tech visit to check your signal. If your dropline comes in from a pole, be sure to ask for a tech with a long ladder. Ask to have your signal checked at the tap (Cox equipment that connects the Cox main line and the dropline to your house). If there is an issue on Cox's side of the demarc (box on the side of your house that separates Cox equipment from your equipment), you won't be charged for the visit. To prevent a potential $75 or $100 service fee (in case the issue is on your side of the demarc), you might consider subscribing to Cox Complete Care ($10/month) before scheduling the visit. You can cancel CCC after 90 days. If you cancel before then, you'll be charged for any service fees that were waived.