Hey Dodellinger,
Thanks for the report! What time did you attempt to craft the skin? US and EU regions patched yesterday and it sounds like it may have occurred right as you were crafting the skin. Because the Anub’arak skin is a Seasonal item it would not be craftable after the patch. Please check to see if your shards were refunded later as well, as sometimes failed purchases can take a while to refund. Additionally, does the item appear in your Transaction History in your Account Management?
Thanks,
~ Fizivix