Novaexchange seems very buggy but I managed to buy some onion today, hoping that in the future I can apply for airdrops! I'm a new investor.
I'm sorry to disappoint you, but unless you have a different account on bitcointalk, you are currently not qualified to enter the airdrop.
You need to be minimum junior member here: activity higher than 30 and have a registered account older than 2017/10/1.
Don't dispair though, if you spend a little effort, it's quite likely you can join the airdrop in two or so months.