My license no is : [edited] Thank you for purchasing the DownloadHelper Video Conversion License for Firefox. Your personal registration code is: [edited] If you purchased this license from the browser you intend to use it on, it should already be registered and you should be able to use the product immediately. Otherwise, or if you want to reinstall your license in your browser, visit that link: https://www.downloadhelper.net/register.php?license= [edited] You can also use Video DownloadHelper settings: https://github.com/aclap-dev/video-downloadhelper/wiki/V9-interface#validate-your-license-key You can access your invoice at https://www.downloadhelper.net/show-invoice?invoice= [edited] Best regards, The DownloadHelper Team