I recommend downloading the wallet
Early in the airdrop there was always report of someone using their exchange address for the airdrop and not getting anything. That's because typically exchange addresses get transferred to the exchange's main address, thus if they use an exchange address it will be zero.
Hopefully he/she changed to an wallet address lol just imagen the person would still use the exchange address until now
But using an exchange address is anyways quite dangerous, even if it works. You never know if the exchange will not freeze your account or would just "disappear".