Cannot watch rented movies in my library

Hello! I have a 2013 16 inch Macbook Pro, all software is updated. I'm having problems watching purchased or rented library movies directly on the computer. We often download movies to watch at a site with limited Wifi. Lately, all of my rented movies do not work. They don't even play even if not downloaded. My computer is authorized to play. I tried clearing my Play History AppleTV cache (as per Apple Insider Ap 5, 2021, who noted that the program seems to be buggy), but that did not help. I can play the movies on my iPhone. I would concur there is a software issue, as noted by the user GlowCreate last year. As with GlowCreate, the movie plays on my iPhone, just not on the Macbook. If I X out of the movie on iPhone, though, and go back to the computer, it still doesn't play. Can anyone help, please? Thank you so much in advance!