I run a screencast for blockchain programming (Ethereum), where I sell monthly subscriptions to watch all my private content.
My churn rate is really insane. Between the failed credit card billing (lots of students must buy with pre-paid credit cards?) and the cancelling, my churn rate is really high, to the point where this month my growth might be 0 or even negative...
I have tried emailing these quitting students, but I had very few answers or unhelpful like "you have great content, but I am not interested in this topic anymore".
As for the students that havent quitted yet, the little feedback I have is positive "You have great content..".
I also produce new content regularly.
Here are some ideas: