Referral code aint working

The referral code is not working as my friend out my code in before logging in and then after that when he put it he logged in or i should say he created an account within 48 hours but for some reason it didnt work like the referral code didnt go in for him as it shows his code to share. I shared this to so many people thinking that this would work when in reality it didnt which means i cant even get the free pro. Fix this PLEASE