Daniel Kotcher Posted January 20, 2021 Report Share Posted January 20, 2021 (edited) Hello, I am trying to upgrade Nitro Pro 13 from Nitro Pro 12 but when I enter my current serial number (23460x-xxxxx-xxxxx) I get a message "We are unable to validate serial number". I believe I am eligible for the upgrade For the offered price of $39.99. Thank you for your help. Edited January 21, 2021 by AllainU Link to comment Share on other sites More sharing options...
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