Woocommerce Coupon Reminder sending reminders for already used coupons

Hi There

We are using Woocommerce Coupon Box to generate coupon codes for newsletter subscriptions and then we use the Woocommerce Coupon Reminder plugin to send reminder emails.

But the issue we have seen is the Reminder plugin is sending reminders for coupons that have already been used.

Is there a setting to stop the Woocommerce Reminder Plugin from sending reminders for coupons that have already been used?

Regards

Richard