Nitro Pro 11 Activation Error

[info@burdgis.com]

I bought a perpetual one-off license for Nitro Pro 11. I've recently moved to a new computer and found the installer for Pro 11. When I enter my serial number I receive a ~24 Activation Error code. What can I do to rectify this?

[Leslie V]

Hello @info@burdgis.com

Thanks for reaching out to us! I am happy to assist you.

Please note that we no longer support Nitro Pro 11 and its activation servers have been shut down.

We recommend to upgrade to our latest version, V14, 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 Pro 14, please visit our upgrade page: 
https://www.gonitro.com/pro/upgrade
 
Alternatively, you can upgrade to the latest build of Nitro Pro 12. Per our Sunset Policy, https://www.gonitro.com/nps/product-details/sunset-policy, we have stopped making feature enhancements to version 12 since we released version 13. You can find Nitro Pro 12 installer from the page below and activate it with your current Nitro Pro 11 serial number. 

x32 http://install.nitropdf.com/professional_12169574/en/retail/nitro_pro12_ba_x86.msi
x64 http://install.nitropdf.com/professional_12169574/en/retail/nitro_pro12_ba_x64.msi
 
Please let us know if you need any further assistance.