Discount codes limited to one use per customer were not always removed when a returning customer tried to reuse them. We fixed the detection for this case.

• Codes with a "one use per customer" limit are now removed for returning customers just like new-customer codes.

• The customer sees the usual banner explaining that the code has already been used.

• Every check is logged in your Activity Log with the strategy that triggered it.

Nothing to configure. If you want DiscountHero to be stricter or more lenient, adjust the matching strategies under Settings.