I have submitted the address that was generated for me twice and yet when I visit the forums I still see the following message: Dear Mongrel Money, if you have received an airdrop invitation and have not yet completed your airdrop confirmation, please do so! All participants must have an address submitted by January 25th, 2016, at the latest. Testnet is coming! Anyway that I can confirm my first address was accepted? Both times I submitted the address I was told it was submitted successfully. Don't want to miss the airdrop.
That message is just a general reminder for everyone. The forum isn't tied to the airdrop registration system. @jolan just posted the following in another thread:
Wow I feel for ingsoc, his inbox must be flooded with latecomers and questions since the 18th came and went.