Watching U-verse TV

Is a landline needed for the old Uverse ( grandfather Uverse)?

My U-verse subscription includes the Hallmark HD channel 1365. For some reason, newly released(2021) Hallmark movies aren't available on that channel. I've called att twice and they don't seem to understand my issue.  I've attached 2 pictures.  One showing some movies are available, hence

Previously I could keep recordings for months as long as I had space. Now they drop off in 1 to 3 days.

The screen is black and has a red x in the middle.  The cable box power green light is on. The green link light is flashing and so is the red record light.

Apparently At&t is stumped. They literally do not have a solution to fix the problem of dropped signal. I cant watch tv after 5:00pm it's that simple. Every few minutes the signal is lost. Every time I post about this issue they pull the post. How in the world do you people stay in business.

recording of 3 hour show stops playing after one hour. Says it is "Finished", but green line shows it recorded the full 3 hours.

can i stream u verse on my window 10 pc or use uverse app on window 10

I need to know before I change companies

When I try to watch shows on demand, the audio keeps cutting out and the stream freezes every 15-30 seconds.  Why is this happening?

I have changed password several times, called customer “service”, nothing works