system says that the valid serial code does not exist

[Rachel Martin 0]

I tried to switch my nitro account to a new computer. I deactivated all of the users on the portal, so now there are 0 activations. When trying to activate on my new computer, the system says that the serial code does not exist. I am entering the right security code, I have the original email from purchasing the program. Why can't the system find my serial number and activate?

[AllainU 0]

Hello @Rachel Martin,

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

In order for me to further assist you with your concern, could you please provide the following?:
-The serial number of your Nitro Pro. To send it via private message, hover your mouse on top of my name 'AllainU' and select 'Message'. This matters because our business installers are different from the online ones.
-Nitro Pro build (format is 13.X.X.X, e.g. 13.2.2.25) you are working with. You can find this out by clicking on 'About Nitro Pro' under the Help tab or you can go to Control Panel > Programs 
-A screen shot of the error message you are receiving and/or any important information. To find out how to take a screen shot, check out this link: https://kb.gonitro.com/knowledgebase/#/search/screen/000004108 

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

[Rachel Martin 0]

sent private message with the requested info

[AllainU 0]

Hi @Rachel Martin,

Thank you so much.

I just replied to your private message.

Cheers!

[Rachel Martin 0]

I applied the solutions you sent and it worked!!

[NAABA.RMWB 0]

Hello AlainU,

I am getting the same error. 

[AllainU 0]

Hello @NAABA.RMWB,

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

In order for me to further assist you with your concern, could you please provide the following?:
-The serial number of your Nitro Pro. To send it via private message, hover your mouse on top of my name 'AllainU' and select 'Message'. This matters because our business installers are different from the online ones.
-Nitro Pro build (format is 13.X.X.X, e.g. 13.2.2.25) you are working with. You can find this out by clicking on 'About Nitro Pro' under the Help tab or you can go to Control Panel > Programs and Features.

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