Issues with HBOMAX opening

For 3 weeks I have been having trouble with HBO, Showtime, and Starz, when you go to channel 200-280 channels, lock up, and have to reboot the contour box. The technician came out 2 times and replace 3 contour boxes and said it was a line problem on the street somewhere. Line tech came out and said the line was fine it was a problem at the hu station down the road not a strong signal from HBO. Seen like a lot of other people in the neighborhood has the same problem.

Would channels 200-280 be SDV?  Since this also affects neighbors as well as successive replacement boxes, something up to the headend isn't processing the frequency requests.

Any way for Cox to ID the culprit?

I believe there are 3 problems in the post.

1.  The OP wants equal programming on HBO channels and Max.  This would be HBO issue.

2.  Cable-boxes error on HBO channels.  Seems limited to a neighborhood.

3.  Yes!  If you want to stream like a pro...buy a device engineered to stream.  This ain't be no cable-box.

Where is OPs problem with HBO Max not opening? I thought it was the point of the post but don't see much discussion of it. bimmerman mentioned they also had the problem, but that's about it. I would wonder what box everyone is using. Same one?

Yeah...the title seems misleading; however, perhaps OP has 2 problems but only explained one, and the others related to the title.

Yea. I would be much more concerned with the first mentioned problem in title. Not opening and sluggish UI is a sign of resource management problems. Like the app is using too much memory or the CPU is spiking or something. I bet people with the wireless boxes aren't having the issue.

I don't use apps on my cable-box...I have Roku for apps...and occasionally Contour will get sluggish just navigating TV programming.  Contour just seems bloated with garbage.