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Upgrade offered from my PdfPenPro but license not recognized

Mark Leymaster

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Mark Leymaster

Today Nitro sent me an offer for a single user upgrade to NitroPro 13.

I do not have a Nitro license, just that for PdfPenPro.  I want to know if I am qualified for the upgrade before I buy.

To test that path, I tried the ordinary upgrade path at https://www.gonitro.com/support/upgrade,

but my license was "unable to validate" and I was directed here.

Please advice before the offer expires 12/22

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  • Official Nitronaut
Allain Umailin

Hello @Mark Leymaster,

Thank you for reaching out to us through our Community Forums!

For your kind information, the above page is where Nitro Pro for Windows can be upgraded and since you have PDFpen for Mac, below is the correct Upgrade Portal for you:


Thank you for choosing Nitro and I hope this helps.

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Robert Samery

I have also tried to upgrade from 12 bought April, 2022, I have the license and copied it into the appropriate field but it remains unfound.

Having gone back to my PDFpen Pro 12, it no longer works. A bit annoying I'm afraid.

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