Change the theme for another domain

Hi! I have my theme installed on a site that I don’t use anymore and I wish to use it in another site with another domain. I tried to just install again but I experienced some theme issues and didn’t have access to the theme update directly on wordpress admin panel. What should I do to change the purchase code to another domain so I have all functions working fine please? I already made all theme changes on the new site so I can’t lost everything the changes I already made because the site is ready and full of information. I need a solution where I don’t loose the cofigurations I already made. If anyone could help me I would be very grateful. Thanks!

We have received your support ticket.

Yes but I didn’t received any help, just informed that my support was finished.

What is your ticket ID so I can check it again?

Yes, please. Ticket tracking ID: 963-VZH-NRG6