How does one claim the EA upgraded packs if originally bought on Steam?

As the title suggests, I bought the Steam pack early access with the standard $30 pack.
Earlier I upgraded said pack to the $60 Lord of Ogham pack through the website. Unfortunately I cannot seem to find a way to upgrade my pack, and I'm worried I screwed myself out of some of the items in said pack as well.

Anyone know how to upgrade their tier, would be highly appreciated, and if I messed up tiering up through the website? Thanks.