[@Steve] Hello Steve,
When you have received an e-mail with a blank password it means that you have created an account on MyDraw’s website in the past. The registration info are the credentials( e-mail and password) which are used for activating the software.
If you receive a message “invalid username or password” please check if you have requested a password reset( make sure that you have confirmed the changes). Make sure there is no spacing and click on “Activate with MyDraw account”.