When I created my account, I had to specify both a user name and an email address. When I went to log in, I entered my user name and password as prompted. But it told my login was invalid.
After several attempts, I tried entering my email in the user name field and then it worked!
That is beyond confusing. You can't prompt for a "user name" when you are expecting an email instead of what you referred to as a "user name" earlier in the process. And then when I tried to send ToonTrack a note, I need to specify a product and serial code, etc., as though you'd really rather not hear about it. I'm new to ToonTrack. So far you're 0 for 1.
*Note: It appears that the normal login does suggest an email as a user name. However, the login that you are directed to when you get the email for creating an account just says User name where apparently the email is expected.*