Minecon Capes Skin Pack Removed From Locker

The Minecon 2016 Capes Skin has been completely removed from my purchased items and locker.  I am completely unable to do anything about this, and I do not know if this is to due with the character creator and the new ability to add capes. I unlocked the pack back in 2016 and have had it for all this time. Ever since 1.13, the pack has vanished.