"Unknown reasons" also means unspecified. But I know you know the real reason. Right? I'm sorry to remind you that it's very clearly stated from the OP the rules that you must post at least 10 posts every week, but between the 5th and 6th airdrop, you only posted once. You only posted once, a one-liner, 3 words, 22 characters question. Look at this https://bitcointalksearch.org/topic/m.21027703 . So please don't pretend you don't know because you know it very well that you have violated the rule.
But but but, I want my free stuff without working for it! I was promised free stuff all my life and you need to give it to me! /sarcasm
But seriously... kissmarx, if you had a really valid reason for missing a week and if you've been really active and positive before your missing week you might be able to appeal. I'd visit the official forums and see what you can do there.
https://deeponion.org/community/