Smart Coupons for WooCommerce

I’d like to be able to control the expiration date message shown on the coupon. Currently if you don’t set an expiration date for the coupon it says “Never expires”. I had a situation where the client wasn’t sure if they wanted to offer the coupon for 1 month or 2 months and wanted to wait to see how the offer performed before deciding on a hard expiration. We advertised as “Limited Time Offer” and waited to set the expiration. I’d like to have a setting in the Labels section to set the “Expires” message, for instance “Limited Time Offer”.