Desk 0 Report post Posted January 17, 2020 (edited) My serial number is ******. It is activated. When I try to upgrade to 13 from 12 I get a message that you can not find the serial number. What should I do? Edited January 17, 2020 by Leslie V. Confidential information edited Share this post Link to post Share on other sites
Leslie V. 0 Report post Posted January 17, 2020 Hello @Desk, I checked our records. This key has already been successfully upgraded to Nitro Pro 13. Please let me know if you need further assistance. Share this post Link to post Share on other sites