I believe it set up in a way that you will receive the coins every 7 days counting from the day you applied for airdrop. Providing you follow all the rules stated in OP.
That is my understanding too - 4 weeks airdrop, 7 days after the day you applied. I found on the thread this address (2ND MTNC Airdrop result):
https://docs.google.com/spreadsheets/d/1LRzgvjl2nRq78ePp7hpQ0qSu8ppkQWcyhrR3UgqF5uc/edit#gid=0
I assume that if you are listed there (not in red!), then all good. But, I can't find my entry, google form fulfilled more than 12 hours ago.
Thank you