My Pahadi Dukan review for Smile: Loyalty Program Rewards

I've been a paid customer for several months, and I am facing a bug where a customer keeps referring themselves and generating discount coupons. The backend shows that their coupon was blocked but in reality it isn't. I brought the issue to the support team and they simply replied "you can block the customer" and they didn't provide me with any answer in regard to why it was happening in the first place. No accountability in the loss of revenue that we faced. Unsubscribing and uninstalling this app right away.