Hello,

Sorry to tell you but this is not our problem and there's nothing what we can do, this offer came from Facebook, they are offering some credits who are converted to tokens (like Cat Harrison said) but I can tell you what I did.

There's a trick and it should work (I did it already) you can ask your friend to look in his browser history and send you the link from the offer and you should be able to do the offer, good luck!