Don’t assume everyone who leaves is a dissatisfied customer. Sometimes, life happens. If you make it hard for people to quit when they need to, or pester them to come back before they’re ready, you run the risk of frustrating someone who would’ve otherwise returned on their own.
… responses had previously slipped under the radar, but now they were coming through loud and clear. Hoping to retain customers by keeping them on a path of continual engagement blatantly ignores the fact that people have lives beyond your product.