Who is eligible for SOS airdrop?

Could you please elaborate on the eligibility criteria for the SOS airdrop? I'm particularly interested in knowing if there are any specific requirements or qualifications that individuals need to meet in order to be eligible for this airdrop. Also, is there a limit to the number of participants who can receive the airdrop? And if so, how is this limit determined? Additionally, are there any geographical restrictions or is the airdrop open to participants from all locations? Lastly, how can interested individuals ensure that they are eligible and don't miss out on this opportunity? Thank you for your clarification.