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-23: Error - License number already used

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Jerry Bongard

Hi All,  Need a little assistance with a Nitro Pro 12 re-installation (version 12.101.487) due to a system glitch.  The subject error comes up even after I free up all my Activation by Deactivating them.

I took some screen captures but don't have a website to put them to to use the "Insert image from URL" button.  

Can someone tell me what I need to do to get this right and free my license up so I can get it activated before the timer runs out in 4 days?

Thanks and take care,


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Leslie V.

Hello Jerry,

Thanks for reaching out to us!

Please send me your serial number so I can check. I cannot locate it using the email address that you provided.

I look forward to your response.

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4 hours ago, Jerry Bongard said:

Hi Leslie,

Serial number for Nitro Pro 12 is ***.



Please install Nitro Pro 12:https://www.gonitro.com/nps/product-details/downloads

Then activate with the serial number you sent me.

I hope this helps. Let me know if you require anything else.

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