Airdrop has not started yet, it will be live on 3rd Oct as per information posted on their website. They will remove all balances before starting the airdrop, currently, they are working in test mode only.
I have also tried to make a claim .. and the result "Some problem occurred, please try again.User already exists in our database! Sorry, No additional free content allowed!" after I read .. information listed on webside .. same as you say