Find the answers to your questions in our Knowledge Base
You can access the invoice for your Question Samurai purchase via our online account system.
Here's a link that will get you to the right page.
Alternatively, head to www.noblesamurai.com/account/login
If you have never used this facility before then you can use the "Forgot Password" link to get a password reset link Emailed to you.
Once you are logged in, click on the "My Software" section, then select your Samurai product.
On the next screen you can click the "View My Invoice" link.