The airdrop is not a real airdrop, it is more like a social bounty since it requires to advertise you on 3 different social networks. Please call things with their name.
I thought it said one of the 3 was enough.. I uploaded the same screenshot to all 3 to get the form to process
Only Twitter and Facebook are required (red star on the right on the form), the Bitcointalk posting seems not to be required, no red star displayed...