Lavish Bath Box review for FreshCredit ‑ Store Credit

I have more customers than my subscription allows forcing me to upgrade to a super expensive subscription but I only want to give store credit to less than the allowed customer limit amount in the starter plan. Just because they have a customer account with me doesn't mean I want to offer them credit or that they even shop with me or have placed a single order. Many customers have multiple accounts with multiple emails. I won't be able to use the app due to this.