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I've recently switched computers and want to re-install Nitro Pro. I've deactivated the license on my old computer. I downloaded the demo version and tried to use my serial number but it said it didn't exist. I looked at the trial version and see that it's version 13. The last one that I downloaded was 12 so how do I activate an older version?

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  • Official Nitronaut

Hello @CHS2002,

Thanks for reaching out to us!

Please uninstall Nitro Pro 13 and install Nitro Pro 12. You can get the correct version 12 installers from this page: 

After installation, you can activate by opening Nitro, click on the Help tab > About Nitro Pro > Activate and enter your serial.

I hope that helps!

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