I ain't sure it's a good love asking people for a KYC just to get airdrops. This surely will cause a lot of those who would've tried the app out to lose interest. Except the purported KYC you're referring to is just an email add. BTW, your X5 ROI prediction is bogus. This is because nothing is so certain in crypto that it can't be doubted. I have seen countless listed projects which didn't even get to the ICO or presale price.
It's an invitation for members that looking for airdrop, it's upto them if they want to take kyc or not.no idea how secured they are but since it's a wallet I suggest other members do not login your own wallet for the sake of recieving a free tokens . They have many fake wallet already in the web right now just to get other people private key , so it's not secured to give it to a website that you never trust.