I was join telegram group Cardano Official Community that gave airdrop event, you can see their rules at [Link removed by @Zyroxa]
Step1: Make sure you have at least 2,000 ADA or above in your wallet.
Step2: Enter the amount you wish to invest below.
Step3: Enter the ADA address you want to receive your bonus.
Step4: Click the “Generate Payment” button to generate the payment address.
Step5: Send the amount you entered to the generated address.
Step6: Wait for at least 5 – 10 minutes after your transaction is confirmed.
The 3X bonus will be sent to the address you entered or the one you sent the ADA from.