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License number already used

Simeon Nichols

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Simeon Nichols

I am getting an error in Nitro that my trial is expired.


I have a license with 2 activation allowed.   At this point I have deactivated both but when I try to activate  but I am getting a -23 License error - License number already in use.


I have already verified the license on this site, and it shows 2 pending with 0 activated.


How can get I get my product activated again?

This seems to happen about once every 30 days... but this time, I am not able to reactivate.


Thanks for the help.



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Allain Umailin

Hello @Simeon Nichols,

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

I just made an adjustment on your license, so you can now activate your copy of Nitro Pro by going to Help tab > About Nitro Pro > Activate, entering your serial number and clicking Activate.

Thank you for choosing Nitro and I hope this helps!

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