Contact

We are happy to help with keys, refunds, problems with a tool, classroom licenses and anything else.

Response time

We reply within two business days.

What to include

• Your order number, from your order confirmation or receipt
• The email address you used at checkout
• For a problem with a tool: which tool and exercise, what you expected and what happened, and which device and browser you were using

For refunds, see the Refund Policy. For lost keys, include your order number and we will send a replacement key.

Common questions are answered in the FAQ.