Lucas883 0 Report post Posted November 10, 2019 Hi. I have an old version, Nitro pdf 9. I would like to update to the latest version but when I try the product key to upgrade I get an error message. Thanks Share this post Link to post Share on other sites
Leslie V. 0 Report post Posted November 11, 2019 Hello @Lucas883, Please send me your serial number via direct message so I can check. Thanks! Share this post Link to post Share on other sites
