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Serial does not exist


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I have a new computer and support gave me my serial number to load on the new device for Nitro Pro. When entered it says "serial number does not exist." 

I try to go through the deactivation steps, and it says "select devices to deactivate." There are no devices listed I can select. It says I have 2 devices remaining to load Nitro to. I'm stuck in a loop and can't get it activated with the serial number. My old computer began with 5049....... and I had version 13.35 loaded to that device. 

Thank you for your assistance. 

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  • Official Nitronaut

Hello @J M

Thanks for your message. I'm happy to assist you.

The error message means that the serial number you are trying to activate is for a different version of Nitro PDF Pro.

Your serial number is for Nitro PDF Pro 13. Please uninstall the version you installed.
And then get the correct version 13 installer from the page below:

After installation, activate with your serial number.

Please let me know how that goes.

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