sjsager 0 Report post Posted January 12 (edited) I am using Nitro Pro 10.5.9.9 and would like to upgrade to version 12 but when I check for eligibility I get an error that the site cannot validate my serial number ******************. How can I resolve this? Edited January 14 by Leslie V. Confidential information edited Share this post Link to post Share on other sites
Leslie V. 0 Report post Posted January 14 Hello @sjsager, Thanks for reaching out to us! The serial number you provided (which I edited to hide confidential information) has already been used for upgrade in March 2018. Your key was sent to last June, and it has been activated once since. Do you have a copy of this key? If not, I can send it to you via direct message. Hope that helps! Share this post Link to post Share on other sites
