GEW Posted October 14, 2018 Report Share Posted October 14, 2018 Trying to upgrade from Nitro 11 and get this message when putting my serial number into the upgrade box - any ideas? 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. Link to comment Share on other sites More sharing options...
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