For your Reduce Churn automation, you can see how they are performing by checking the stats for your automations.
To access them, navigate to the Analytics and Marketing tab:
Followed by the "Reduce Churn" section:
Here, you will find a breakdown of all cancellation reasons as well as other relevant data in regards to your Reduce Churn automations:
It is also possible to break down the data further by clicking on the relevant month and "Drilling" the data: