Jasmine Buck Posted April 14, 2022 Report Share Posted April 14, 2022 If I type https://nitropdf.com/activation in the browser, then I get to the 'Activation Certificate' section but when I put in the installation ID and the serial number I get an 'Invalid Data' error. I've tried the deactivation section on the support page too. Nothing works, please advise. This is for Nitro Pro 12! Link to comment Share on other sites More sharing options...
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