Unfortunately you are posting to a customer helping customer forum so it’s doubtful any real help will come from here.
i don’t use their tv so I cannot say if this will work. When I had cable many many years ago the people at the help line would say disconnect the power cord to each set box.
wait 5 minutes and plug them all back in one at a time until they were at the start up screen. In cable that was channel zero. It was via doing this you actually reset the lineup and other functions. I know this works because I recently did this at my mother in laws house with 4 brand new set top boxes with DVR the guy who was assisting me stayed on the line and look at each box. He did a great job. All worked perfectly doing what I told you to do above.
and hey if it doesn’t work you still lost nothing for trying.
i do not advocate expensive tv packages when I use a streaming service with 165 stations for $40 a month no bogus taxes or sports fees or administrative fees just a flat $40 much better value and you can save money from Fios . Just need internet. Bingo