My license number didn't work on Nitro PDFversion 13. I can't activate

[Gabriel 0]

I have a similar problem. I bought 

1	Product UpdatesEnsure you always have access to Nitro's latest features, fixes, and enhancements as soon as they're available.

 but my license number didn't work on Nitro pdf version 13. I can't activate.

[AllainU 0]

Hello @Gabriel,

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.

[AllainU 0]

Hello @Gabriel,

Thank you for your private message.

After checking our records, you should install Nitro Pro 12 instead of Nitro Pro 13 so kindly follow these steps:
 
1. Uninstall Nitro Pro 13 from your computer by going to Control Panel > Programs > Programs and Features then reboot the machine.

2. Please clear all your downloads folder or delete all downloaded Nitro installers. This step is important because we noticed that if you are saving all the installers and you download them in the same folder (like the downloads folder), the EXE can pick up any MSI installer in that folder and you may pick-up one of the older builds instead of the newly downloaded package.

3. Download your Nitro Pro 12 using these offline link/s:

x32 http://install.nitropdf.com/professional_12163574/en/retail/nitro_pro12_ba_x86.msi 
x64 http://install.nitropdf.com/professional_12163574/en/retail/nitro_pro12_ba_x64.msi

If you are unsure if your machine is using 32 or 64-bit, please refer to this link: https://kb.gonitro.com/knowledgebase/#/search/64/000003790 

4. After installation, you can activate by opening Nitro Pro, clicking on the Help tab > About Nitro Pro > Activation and entering your serial number

Thank you for choosing Nitro and I hope this helps!