I don’t have an email/password login for PBS, so I can’t say.
Did it work in previous versions, and if so, which version?
You could go back to an older version if that’s so.
Depending on what happens this weekend, I may see what is involved in getting an email and password login.
Maybe if someone else does can further this discussion faster/better?
Added #1: I may be wrong; last I tried, PBS.org I did not need email/password.
But I also see they talk about donations for certain content, so that’s probably why they want someone to log in.
ADDED #2: I also found I can download much content without logging in.