On December 17, 2019 we made an update to how coupon pricing is validated. Previously we would allow a coupon to to be created with a negative amount. If a coupon with a negative amount was applied to a subscription it would get ignored and not attempt to generate a discount, which is the expected behavior.
In order to bring coupon validations in line with the expected behavior, we no longer allow coupons to be created with a negative amount. There were a small percentage of these coupons that we’ve updated from a negative amount to
0 in order to maintain the existing behavior but keep them valid.
If you have any questions or concerns please contact us at firstname.lastname@example.org and we’ll be glad to assist.