I went to send my second character the little devil's wings i bought awhile ago and have kept in my item shop bag ever since. I just seen them the other day when I did i run through the forsaken abby. I logged in today and saw they weren't there. I emailed support and they sent me an email back that said : " apologize for any any inconvinece this has caused." That was it. Any plans on telling me when they were taken from inventory, what times, ect.? I sure in the heck haven't sold them or used them for any character.
I'd reply back to said support ticket and provide as much detail as you possibly can - that doesn't sound like a complete support answer, though if there's more to that answer, it may mean you provided insufficient detail and support could not locate the item.
Either way, you'll want to keep in touch with them.