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Upgrade from 11 to the latest version

Imre K

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I tried to check if or Nitro PDF 11 are eligible to upgrdae to the lateset version and I can get a discount. During the upgrade proces i got the message below. I have three licences, i got the message for each one.

"We were unable to validate your serial number. Please ensure you entered it correctly. If you believe you are eligible for an upgrade, please leave a post on our Community Forum and update us with your issue. You’re eligible for a discounted upgrade to the newest version of Nitro Pro."

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