Shop has refunded the amount in account credit and customer attempted checkout, which is showing as customer's credit applied but did not used on any of the order. However in the most recent order which was created by admin has the credit issue which was used on the order was the wrong amount.

When the order was placed the customer had $75.07 in available store credit. The system applied $10.08 according to the order details but in the customer account it shows that $64.27 was applied and the customer only has $10.08 left in their account credit.