I won a bid.I want to add and pay for the ebay authentication service. How do I do that? I can't see the option to add it at checkout.

I won a bid. I want to add and pay for the ebay authentication service. How do I do that? | Ask a Mentor

I won a bid. I want to add and pay for the ebay authentication service. How do I do that? | Ask a Mentor | eBay Community