Free CDS dial with new scope

[Bad Bob]

Just purchased a VX-Freedom 6-18x40 CDS. Was filling out the CDS dial request form and have a question. In the scope serial # box, it states "proof of purchase required for free dial request". So what else should I enter in that box other than the serial #?
Thank you,
Bob

[Korth Group Ltd]

Good afternoon Bob,

Please proceed with filling out the form. If we need any further info from you we'll be sure to reach out.

Thanks,
KGL

[Bad Bob]

Thank you, will do.