We were unable to validate your serial number to upgrade to version 14 from 13.

[Walter Nieto]

I am having trouble upgrading to Nitro PDF Pro 14 from Nitro PDF Pro 13. I went to the upgrade link and when I input the serial number 5049******************************** I get this error message "We were unable to validate your serial number". I bought this on December 2022 here is part of the reference number 369*******. Can you please help me get this resolved. Thank you.

[Reymund Oyong]

Greetings @Walter Nieto

Thank you for reaching out through our Community Forums!

I have taken the necessary adjustment to ensure that you can proceed with upgrading your existing license to version 14 through the Upgrade Portal.
Please access again our Upgrade page and then try to upgrade your serial number. 

Kind regards,