Contact Us
A question about the course, a problem with a payment, deleting your account, or something that looks wrong. Write it below and a person reads it, usually the same day.
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Quicker Routes for Three Common Things
- A payment problem. Charged twice, or paid and still locked out? Send the message from the email on your account and we put it right. Payments are otherwise final, as the terms explain; the free problems are there so you can try before you buy.
- Canceling a subscription. You do not need to write to us. "Manage subscription" on your account page opens Stripe's page, and two clicks cancel it. Access runs to the end of the period you paid for.
- A problem that seems wrong. "Report a problem with this question" sits under every practice problem and sends us the exact problem and your answer, which is faster than describing it here.
Teaching a class? The schools page has its own form for class quotes.