I sent my referral code to couple of my friends, and even my brother to try vercel out. The first 6 “I think” they went through and I did get my 5 credits for each, but there are 3 others that I invited that I didn’t get ANYTHING for. Why could that be?
If the other 3 people had already made accounts before (and therefore logged in instead of signing up) or did not end up creating an account at all, then you won't get the credit for their referral
While it's possible that the referral coupon was broken, the 6 successful ones make that unlikely. Either way, if you can share a username, ID, or something to identify a user who was supposed to be your referral but wasn't, I can check to see what's up with their account