I don't know how to fix it but here's a few possibilities to identify what exactly the problem is:
1) If you log into your account using the link at the top of the page which version of the game does it say you've got?
It will be on the right hand side of the Account Summary page. If it doesn't say Imperial Edition then you've not set up your account correctly. It might be that there's an additional code you need to put in. (I got the boxed version and I had 2 codes: one for the base game and one for the Explorer's Pack, when I got the Digital Imperial Edition upgrade a 3rd code was added to my account.
2) When you created your first character and appeared at the start of the Wailing Prison (tutorial/introduction) did you get a whole bunch of notifications on the screen talking about things being unlocked?
3) The items are added in a few different ways. The Imperial Horse and the pets go into the collections menu. On the PC that's the one with the circle, square and triangle icon in between the Journal and the Map. But I'm not sure how the menus work on console.
The Ring of Mara and the maps from the Explorer's Pack are mailed to you. That's the envelope icon (again, on PC, not sure about console). You should also have received mails about the items added to your collections and non-item upgrades like the ability to convert equipment to Imperial style.
PC EU player | She/her/hers | PAWS (Positively Against Wrip-off Stuff) - Say No to Crown Crates!
"Remember in this game we call life that no one said it's fair"