Churn rose to 2.3% in August, from 1.4%. 70% of the loss came from Starter accounts that signed up during the July promotion and never connected billing. Asking for the connection during onboarding would address most of it.
Churn increased in August, mostly on the Starter plan. Many of these customers joined in July. Consider improving onboarding for new Starter accounts.
Pick the better answer to tune which model handles questions like this.