14-day refund

Request a refund

If it didn't help, you get your money back. Send this within 14 days of purchase and we refund you in full through Paddle. One refund per customer.

Refund request



What didn't work for you? Optional. It doesn't affect your refund; it helps us write better books.


Prefer email? Write to hello (at) netdiagrams.com with the address you bought with.