You should not use the word airdrop if you ask for donations to receive it (this is a ICO) nor if the people have to wear a signature (this is called signature campaign).
Red flags.
Hi Barak Ocrypto,
We heard your concern. However, we are not asking for a donation for airdrop. And we know its a form of ICO, but we prefer to use the word donation and token reward. And the airdrop event is currently offline at the moment. We are building a community, and the community has options to voluntarily wear signatures. I hope this clears out the confusion, have a nice day.