"the payment you received is fraudulent "

No payment will be received as it's a SCAM

Repost of the Countess's information:

The instant that a gift card is mentioned, and the suggestion that eBay is holding the payment in escrow, you should immediately cease all contact .

The instant you see an email from a gmail address purporting to be eBay, you should immediately cease all contact.

Picture of a gift card plus its receipt enables the use of it. Scam.