lsteinbrenner Posted May 20 Report Share Posted May 20 I am currently running 12.16.9.574 and wanted to upgrade. But when I put in the serial number it says unable to validate. I can provide the serial number if needed or am I not eligible to upgrade this version? Link to comment Share on other sites More sharing options...
Official Nitronaut Joseph Capiral Posted May 20 Official Nitronaut Report Share Posted May 20 Hi @lsteinbrenner Thank you for reaching out to us through our Community Forums. I understand you are having issues upgrading your Nitro PDF Pro 12 serial number due to an error. I apologize for the inconvenience and please message me the serial number that you have to check if the serial number is eligible for an upgrade. Thank you. Link to comment Share on other sites More sharing options...
Stefan Phillips Posted May 21 Report Share Posted May 21 Same here... I get the following message trying to upgrade from Nitro PDF Pro 13: Quote We were unable to validate your serial number. Please ensure you entered it correctly. If you believe you are eligible for an upgrade, please leave a post on our Community Forum and update us with your issue. Link to comment Share on other sites More sharing options...
Official Nitronaut Joseph Capiral Posted June 9 Official Nitronaut Report Share Posted June 9 Hi @Stefan Phillips Kindly provide your serial number so that I can check. Thank you. Link to comment Share on other sites More sharing options...
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