5% has become 2%, dev give 60% of his coins for those who registered but didn't get ebtc.
Howe do you know that 60% didn't get their airdrop if this is true then he should do another run of airdrop again, for transparency does he has the list of ethreum address and email anyway this is kind of airdrop is subject for abuse, he should confine it to people on Bitcointalk with junior rank like all the other airdrops in the past.
There's people email and IP being accidentally deleted along with people abuse the airdrop using multiple accounts with the same IP. From 15k accounts down to 8k. Its not 60% of total, its 60% from dev reserved tokens