I hope you are having an awesome day and thanks for contacting us regarding your query.
In regards to the theme, the only thing you actually need to do is remove the license from the old installation if you're migrating to a new installation, however, if you're just changing the domain then you may just follow the guide here:
Hey!
I'm currently setting up the website for my youth NGO and I decided to change the domain name.
Could you help me with the steps involved?
I just recently purchased Salient (about a week ago), do I have to buy another license or is it okay since I'm only changing domain names?
Cheers
Hi there,
I hope you are having an awesome day and thanks for contacting us regarding your query.
In regards to the theme, the only thing you actually need to do is remove the license from the old installation if you're migrating to a new installation, however, if you're just changing the domain then you may just follow the guide here:
https://codex.wordpress.org/Changing_The_Site_URL
Please let me know if there are any more questions that I may answer for you :)
Cheers!