No one will have the power to give you a serial number or provide support except the official developer of the application. You will need to insist using the contact form or call the developer directly. The contact form can be found on the Contact Us page at its website. There is also a phone number you can use for this purpose:
Sat: 12pm - 5pm PST
If you're outside America, call your phone company to see exactly what number you have to dial in front of the one posted above.