Nope not running it and have received nothing from PBS.org.
You used the box where you sign up for newsletters, right? When I filled it out, it said I would be receiving newsletters shortly. Never said anything about a confirmation email.
Hi! I had to check Safari history, because I tried so many different things at the time, I forget which finally worked. ---And not the most transparent website either.
I know the newsletter signup you mean, but the one you want is this,
and it should look like the attached image:
https://account.pbs.org/accounts/login/
I had a hard time getting back to this page on repeated tries so it's not you, just inscrutable web design.