3 licenses will not activate

[CherDH]

We purchased 4 licenses and 3 of them will not activate.  The one license that is activated and installed on only one computer shows that both activations have been used and I'm almost certain this is not correct.  
Is someone available to help me sort this out?  Thanks in advance.  
Cheryl

[Allain Umailin]

Hello @CherDH,

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 Computer ID if the active user by referring to this article: https://kb.gonitro.com/knowledgebase#/search/computer id/000003832. I am referring to the license that is installed on one machine only.
-Screen shot of the error messages you are receiving and/or any important information when activating the other three licenses. To find out how to take a screen shot, check out this link: https://kb.gonitro.com/knowledgebase/#/search/screen/000004108

To send these 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.