When customers refer your store URL, there can be some cases preventing them from successful referrals
The case happens in the following steps:
In this case, both A and B will not receive rewards as the system does not consider it to be a referral.
There are 2 solutions:
In this case, in BON Admin, go to Customer > Customer data tab > Click on the excluded account in the customer list > Click on Include into program button
Related FAQ: How to test the referral program