The email response you received requested certain details.

You must respond to that email within 48 hrs. or your purchase will be cancelled.

Thank you, I've respond to that email. 

Thank you so much. Should I do another step to receive it or just keep refresh my inbox ? 

My registered email for stardock account is the same email account that I was used to purchase the full version of Fences 3. I'm waiting for that mail now, still nothing here, but I hope I can receive it soon.  

I'm looking into this now montella. My apologies. I will respond to the ticket and would ask if you could as well from now on as that's the quickest way to get support's attention.

https://www.stardock.com/support/software_eula.aspx

Use on a personal computer:

1. An Individual User may:

   1. Install, use and activate one (1) copy of the Software on up to five (5) unique personal computers simultaneously that are owned by you for your personal use.