This is not a code. You are purchasing the login and password to an approved TeSPA account. You have to pay an additional $20 TeSPA Plus membership fee (via paypal) and link your battle.net account in order to claim your Dalaran Flame Cardback. This works in all regions.
With TeSPA Plus you will gain access to:
Hearthstone Dalaran Flame Cardback (any region)
Heroes of the Storm "Nexus Initiate Bundle"
Heroes of the Storm Loot Chests
Heroes of the Storm Alarak Portrait (NA region only)
You must wait 7-10 days after linking your battle.net account to receive the Dalaran Flame Cardback.
TeSPA account information will be sent via eBay message within 24 hours of purchase.
Feel free to message me if you have any questions.