No authentication tag attached when authentication was passed.

[soniap789]

Bought a pair of trainers, were sent for authentication, passed but have no tag attached when I received them, what do I do about it?

[papso22]

That depends on how important the tag was to you.  If important you will have to contact ebay customer service to see what they can do about it.  

It's an unusual situation with no published protocol.