Just to be sure .. did you look at the "Extras" console near the tarot-desk ( its to your left if you stand in front of van wynter ) for your items? You can activate them for every single character there. You wont find them as normal items in your inventory or stash.
please give me your Gamertag as well as one of your character's name.Also if it is not inconvenient please uninstall the game and DLCs, first install them and after that the basic game.
there are two DLCs which are not included in the Season pass because these were pre-order bonuses for those who pre-ordered the game.
I also bought the imperium eddition as well and do not have access to the new mission/ map that showed up. The charybdis map. Is that not what the imperium addition with seasonal pass was for. So I do not have to keep buying maps/DOC?
But hey, at least we're getting even more new content we won't be able to access soon.
I'm on PS4 and I found them there.
I hope it helps, and if not, well more things to add to bug list ^^