Hopefully this post will help others to not make this mistake.
If you have bought the Seekers edition and want to apply it to your EXISTING account. DO NOT follow SE's instructions. If you click on playonline it will create a NEW account. You have to click on "Add a Service Account".
I blindly followed SE's instructions and ended up with a new POLID to my SE account. I sent an email to SE, hopefully they can remove that account and transfer the codes to my existing account. If not guess I'll have to buy a 2nd expansion .
SE I would recommend you edit your text on the SEEKERS edition. I suspect many existing players have bought it for the ingame items and the instructions you have on that edition are for players that DO NOT have an existing character.