mili 0 Report post Posted February 5, 2019 Hello, we bought 11 licences of Nitro Pro 12. We installed 7 of them at 4 of them we got (-23:Error - Licence number alredy used). Please respond as quick as possible. Thank you. Share this post Link to post Share on other sites
Leslie V. 0 Report post Posted February 5, 2019 Hello @mili, Thanks for reaching out to us! I couldn't locate your serial number to check. Please go to this page and open a support ticket. Please make sure to include the serial number. Cheers! Share this post Link to post Share on other sites