HBO Max app programs will not play correctly on Philips TV

I have this app through Cox, and it does not work correctly, and hasn't for about a year.  All other apps work fine.  First, it takes forever to open, then pauses and buffers and the screen freezes and goes black.  The sound cuts in and out.  It does this literally ever 1-2 minutes.  And when it's not doing that, it's giving me an error.  I don't know how to post a picture of this, I don't have a URL for the photo I took, but it says "Title Not Available.  Sorry, we're having trouble accessing that title right now.  Please go back and try playing the title again. And it gives this code: 9be12b52-48ca-444b-e72d-010d7194f5b7 ERR-010."  When I retry to open the app and watch, I get a black screen.  I had multiple techs out last year when it was messing up, and none of them could tell me what was wrong or how to fix it.  The app plays on my phone and laptop just fine, so it is a problem with the Contour box and having to stream through this device and through Cox.  I'd like to know if ANYONE has a fix, because Customer Support via phone is completely useless.  I can reboot my box until the cows come home and it WILL NOT fix this problem.  Any help would be appreciated.