Assistance with Activation for Newest Version of NitroPdf

[cmcparalegal 0]

I tried to update NITROPRO to the latest version (Version 13) from Version 10.  It says that my serial number cannot be found.  Please help! 

[AllainU 0]

Hello @cmcparalegal,

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

In order to further assist you, could you please provide a screenshot of your 'About Nitro Pro' window under Help tab?

Also, a screenshot of the error message you have received after entering your serial number.

To send them via private message, hover your mouse on top of my name 'AllainU' and select 'Message'.

Thank you very much in advance and I am looking forward to hearing back from you.