So I read that there is a private beta forum and if you got your key from Curse you didn't get access, but I got my key from ESO and I didn't see anything in the email about a private beta forum, so was this just for really early testers?

Ok I actually overlooked the link, but it takes me to pre-order page? O.o

Check down at the bottom of the email. You should open a ticket for this; no one here can really help with this.

Curse Invites do not have access to the beta forums