Is very strange what you are saying, your friend asked to send the card by regular mail or asked to send the card by DHL. in some countries, it is difficult to receive fisical cards by regular mail because they steal, and this is case of my country, for example. I never receive card by regular mail in my country, I had to ask them to send them by DHL. you should wait until your friend receives his or her card, test it and see if it is working well for you to think about asking for your card too