Windows 11 update from Windows 10 and Nitro Pro no longer working

[veganrn@gmail.com]

I've uninstalled it and reinstalled Nitro Pro 12 and entered my serial number and get the error message 22 - Wrong License Number. My license # is correct and verified through the Nitro portal. It says I need to "deactivate" and then it will immediately work again, but then I get stuck in a loop where I then get a popup that says "Please select devices to deactivate." and an OK button, which just keeps me on the serial # check & deactivate screen.

Edited February 27, 2023 by veganrn@gmail.com

[Reymund Oyong]

Greetings @veganrn@gmail.com

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

In checking your license, I can see that you have a version 11 serial number. 
Please note that we no longer support Nitro Pro 11 and older and its activation servers have been shut down. Thus, any activation or deactivation attempt on these versions will no longer work. Also, access to the installer for these versions are no longer available.

We recommend upgrading to our latest version, Nitro PDF Pro 13, which comes with significant stability and security improvements, as well as many feature enhancements, in particular in conversion and OCR functions. 
To upgrade to Nitro PDF Pro 13 with a discounted price, please visit our Upgrade page at https://www.gonitro.com/support/upgrade 

Alternatively, you can continue to use your existing serial number by installing the latest build of Nitro PDF Pro 12 which is 12.16.9.574.
Per our Sunset Policy, https://www.gonitro.com/nps/product-details/sunset-policy, we stopped making feature enhancements to version 12 once we released Nitro PDF Pro 13.  

You can find the Nitro Pro 12.16.9.574 installer from the link below and activate it with your current Nitro Pro serial number:
https://www.gonitro.com/product-details/downloads - click the 'Download Nitro Pro 12' link 

Once Nitro PDF Pro 12 is installed, you can activate it by going to the Help tab > About Nitro Pro > Activate. Enter the serial number then click Activate.  

Kind regards,

[Phillip Koehnke]

When I login to Nitro Sign all I get is a blank page with no error messages.  Suggestions?

[Reymund Oyong]

Greetings @Phillip Koehnke

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

Could you please describe if you are logging in to Nitro Sign through the Nitro PDF Pro application or through the web at https://cloud.gonitro.com ?
If through the application, what is the version and complete build of your Nitro PDF Pro? This can be located under the Help tab > About Nitro Pro. 
If through the web browser, are you getting the same results when using a different browser?

Kind regards,