Contact.
Questions, a file that won't open, a licence for your school or team, an idea for a new tool — write to us.
Purchases, licences, technical support and suggestions
We reply on working days, 9:00 to 17:00 (GMT).
To help us help you faster
- Tell us which version you use (online or Windows) and the version number, shown at the bottom of the app.
- If a file won't open, tell us the format and size. Don't send confidential drawings.
- If it's about a purchase, give the email you bought with (never the full key).
Many answers are already in the user manual. User manual