That not true, cos my key were in the correct format when i generated it, but only saved to cap after i did a print to pdf in other to save the keys. if he or she copied their kek address directly from the site like i did they will have a balance but won't be able to claim it after.
I'm not sure if this would work, but you could try a brute-force approach. Test every possible combination of caps and non-caps for your private key. You'd need to build a program to do it for you, but since you know what all the letters/numbers are you *might* be able to do it.
If your keys were correct when you generated them and you followed all other steps correctly then the airdrop will have been sent. Are you sure you recorded the correct public key into the RADS smart chain?
Good luck!