Thomas Forsmark Sørensen Posted April 11, 2021 Report Share Posted April 11, 2021 Hi, I have got a new computer and I was trying to install and activate Nitro Pro 12 on it, with the license I bought in 2019. When I try to activate with the license number I gets the error "-20:Error - invalid license number". But I still have the e-mail I received when I bought the license and I am using the correct license number. If I use Activating Nitro Pro | Nitro (gonitro.com) to check my license it says that status is active and I have activated 0 out of 2 allowed activations. I the decided to try to upgrade to Nitro Pro 13, but if I enter my license number in the "Get Upgrade" form I get the following error: We were unable to validate your serial number. Please ensure you entered it correctly. If you believe you are eligible for an upgrade, please leave a post on our Community Forum and update us with your issue. I hope that you can help. Kind Regards Thomas Link to comment Share on other sites More sharing options...
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