Erinn B. 0 Report post Posted November 18, 2019 I am not able to activate Nitro Pro with the serial number I received with the email purchase confirmation. Please advise. Below is the error I received. -20 error invalid license number The serial number doesn't exist Share this post Link to post Share on other sites
AllainU 0 Report post Posted November 18, 2019 Hello @Erinn B., Thank you for reaching out to us through our Community Forums! In order for me to further assist you with your concern, could you please provide the serial number of your Nitro Pro? To send it via private message, hover your mouse on top of my name 'AllainU' and select 'Message'. This matters because our business installers are different from the online ones. Thank you very much in advance and I am looking forward to hearing back from you. Share this post Link to post Share on other sites
