I can say that this is just a piece of scam in which you need first to send some ethereum before in order to get the token airdrop and just based on the initial information it is clearly that he/she will just scam you in sending first an ethereum and after that he will just vanished just like nothing happens and the ethereum that you have been send to him will be just nothing and the token airdrop that they have promised will be remain unknown and you will not get it. Just a piece of advice, don't get me wrong just don't trust people who requires to send some ethereum or bitcoin just to claim your token.