I have recently seen more and more people being scammed on eBay with digital codes using the paypal dispute and chargeback scam.
To anyone who has been scammed like this please do the following.
1. If you have not posted the code to the address provided by PayPal post it asap recorded delivery. Even after the dispute claim.
2. Wait for the recorded delivery to track and show its been signed or refused.
3. Phone paypal directly and give them the tracking number. They stop any hold of funds on your account. The dispute will now be between paypal and the buyer.
To be covered by PayPals sellers terms you need to post the item and have it tracked. It doesn't matter if you post it after the dispute or before. If it's tracked and signed you have proof you have handed the item over. A lot of people are falling foul of these nasty scams because they think they can no longer post the item after the dispute.
This happened to me and I did all the above steps and within two days all holds on my account were gone. I posted the item nearly 2 months after I had already messaged the code to the scammer.
Hope this helps someone. The good guys need to stick together.