Folks, it makes zero sense why OP wouldn't allow you to give away the invite. The only way to share your invite with someone is to actually purchase device and sell it to the person you wish to give your invite to. They are registered to your email account and that is the only way you can accept it. Or, I suppose you could give someone access to your account, have the device shipped to you and then forward it on when they pay with their own means. So STUPID OnePlus.