Why am I seeing an invalid referral code on visiting the referral link shared by my friend/family?

Why am I seeing an invalid referral code on visiting the referral link shared by my friend/family?

A referral link or code can be marked as invalid if it is found to be in breach of our terms and conditions for the referral program. If a referral code or link is marked as invalid, you will be redirected to an Invalid Referral Code page.