Anthony Hill Posted May 25 Report Share Posted May 25 I have purchased 7 licenses of Nitro Pro PDF v13. Four (4) of them we can upgrade to v14, but three (3) of them say the serial numbers cannot be verified. The last 4 digits of each are: 9515 5492 8335 How do I get these verified so I can upgrade? I want to do them all at once. Link to comment Share on other sites More sharing options...
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