I have a client who wants to offer a referral program.
Here is what they want it to do:
Member Refers Friend
Friend becomes member
Friend makes purchase
Original Referer gets $10 credited to their account that can only be used for future purposes - not for cash back
Reward only on first purchase / 1 time
Reward credited automatically - they do not want the referer to have to use a coupon or coupon code.

Any help would be greatly appreciated.
Thanks in advance - nocturnalenergy