GEW 0 Report post Posted October 14, 2018 Trying to upgrade from Nitro 11 and get this message when putting my serial number into the upgrade box - any ideas? 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. Share this post Link to post Share on other sites
Leslie V. 0 Report post Posted October 15, 2018 Hello @GEW, I can see that you were already able to create a support ticket and my colleague is already in touch with you. We will continue to communicate via that support ticket. Cheers! Share this post Link to post Share on other sites
