I've been playing The Taken King since launch, preordered with the SUROS pack, and everything has been working fine until I logged on today.
My emblem states that it "Requires Preorder Exclusive," and the game recognizes that I have it equipped in my inventory. However, it still doesn't appear in the top-left corner emblem box of my character (where the name, level, and light appear).
It seems people are just starting to find this bug. Is there a solution? My console shows the SUROS pack is installed.