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I am using Nitro Pro and would like to upgrade to version 12 but when I check for eligibility I get an error that the site cannot validate my serial number ******************. How can I resolve this?

Edited by Leslie V.
Confidential information edited

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Leslie V.

Hello @sjsager,

Thanks for reaching out to us!

The serial number you provided (which I edited to hide confidential information) has already been used for upgrade in March 2018. Your key was sent to last June, and it has been activated once since.

Do you have a copy of this key? If not, I can send it to you via direct message.

Hope that helps!

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