Your registration should be on your invoice or maybe in an email sent to you from KNK USA / Accugraphic Sales. Have a look in your Spam/Junk folder and on the original receipt when you ordered your ZO. I should have found out before they closed how they current send the invoice.
I’ll check back to see how you’re doing later today.
I believe I just responded to your support ticket and included your activation PIN. If I have mistaken you for another customer, please submit a support ticket with your name and I’ll get you squared away.