Contact us

A question, feedback or a problem? Send us an email. We usually reply within two working days.

For a problem with a case, please include the case name and what happened. For a payment, include the email address you paid with.

Common questions

How do credits work?

One credit is one case. A credit is used when you start a case, and credits never expire. The tutorial is free, once per account. If you leave a case partway (for example by refreshing the page), starting it again uses another credit.

I paid but my credits are missing.

Credits normally appear within a minute. Refresh the page first. If they are still missing, email us the address you paid with and the time of payment, and we will sort it out.

Can I get a refund?

Write to us with the email you paid with and what went wrong, and we will look at it. If a technical problem cost you a case, we will make it right.

The voice mode is not working.

Check that your browser is allowed to use the microphone (click the lock icon next to the web address). Use a recent version of Chrome, Edge or Safari. If it still does not work, switch to typing at any time: it works the same and scores your answers the same way.

My sign-in email did not arrive.

Check your spam folder and wait a minute or two. Each sign-in link works once and expires after a while, so request a new one if it does not work.

The interviewer misunderstood my answer or the score looks wrong.

The interviewer is an AI and can make mistakes, especially with numbers spoken as words. Tell us which case and question it was and what you said, and we will look into it.