Stick with the 1000 first adresses as announced !!!! That was the Airdrop rule.
Noone was supposed to enter his adress after 1000.

You wrote only long after 2000 adresses were entered, that you will try to accept the extra adresses but reality is that it is not possible as you planned.
Moreover, you will have more genuine adresses, because everyone starts with his real IP and adresse, and only after they can develop fake means.
You can be sure that the longer the list, the more fake adresses there are.

If people whine now after saying that is :
- either because they were late.
- or because they have fake adresses and they will lose hours of industrially faking IPs. they don't want a fair distribution.