I had kind of a similar thing happen. I ended up going to:
And setting up my login. If I remember right, I had to start off with my phone, where I was able to assign a username and password there (if you don't, it'll give you an error when you try to put in your PIN). Then once I established the login, I went online to the link above, logged in, and checked my email settings there. I think I had to check the "deliver as level 1 message" option, and there MAY have been another option as well, I can't remember. But I think the Level 1 delivery was the main part.
After that, it worked like a charm.