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We reply within one working day, usually sooner. There is no ticket queue and no chatbot.

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• Something looks wrong in a question

  Tell us the exam and roughly which question it was. Errors in an explanation matter more to us than almost anything else, and they get fixed the same day.

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• Billing, refunds or cancelling

  Include the email address on the account. Cancelling can also be done yourself from your account page at any time.

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• Access or sign-in trouble

  If you signed up with Google, mention that — it is the most common cause and the quickest to sort out.

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• Anything else

  Feature requests, questions about whether this suits your programme, or feedback on the explanations.

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Looking for an answer straight away? The pricing FAQ covers trials, cancelling and the difference between the subscription and buying a single exam.