Solution
The solution to your problem is quite easy. I just had the same problem and I had an idea and it fixed it.
Solution:
1)Locate your contact name in the address book it will be the one with (me) on the right side of the name.
2) Click Edit.
3) Add the same email address that you use for iCloud in your contact info and then click done.
4) Switch off the Airdrop on your iPhone and open it again.
5) Open the contacts app on your mac and let it refresh (It will sync with your phone).
6) Open the Airdrop tab on your mac and it should be fixed.
Note: WiFi should be on for the sync to work
I hope that helps