Hey there.
I recently did a boost with my main. All items should have been mailed to me, per how the boost works.
However, there are certainly some items missing. How many? I am wholly unsure as it’s impossible to tell/remember. I know for sure, a Shroud of Cooperation is missing. Not in my bank, void, or the mail. What else is no longer with me? 
Thus, if this is the right area to post to indicate a bug, and then also connect with support to have some assistance with finding out what happened?
Thank you.