Kirit Vora Posted February 11, 2022 Report Share Posted February 11, 2022 1. Your mail invited me to upgarde. 2. I am using Nitro Pro 13, bought in Dec. 2021. 3. Upon clicking link. it says" We were unable to validate your serial number." 4. Please let me know if NitroPro13 is eligible for upgrade. Link to comment Share on other sites More sharing options...
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