I have several streamlinks that are working just fine. I have a few, however, that show metadata, but don't work at all. When I examine the link from "Watch Now" on a working streamlink, I see the correct url. For example, Spider-Man Homecoming shows:
But Band of Brothers shows:
I'm fairly certain that Band of Brothers is a show that I added, then removed, edited the link, and added again.
Also, to make things more difficult, I cannot write to any disk connected to the PI4 through Samba.