I got a physical voucher in the mail not an E-Ticket, so I'm not sure if that one has ID numbers on it... But if it does, you'll need to add those numbers to your profile on the official Disney site.
If it doesn't, I'm not sure if you'll be able to get into the Passholder site.
I have the same problem. I wrote to Disney guest services and they said you can no longer use a voucher (which is what the E-Ticket is) to get access to the AP site. Very annoying!
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