Assign you theme to Another Website

i have assigned my purchased prolancer theme to one of my domains. Now I want to cancel it and assign to my another domain. How can I realize that kindly help me.

You would need to de-register it from the first site.

If you cannot access that site then you need to talk to the author, although FYI not all authors allow the single domain license to be transferred once the item has been used for a project they ask for a separate purchase for new domains/websites

Thank you charlie. But I used this before just 2-3 days. So This is not used for any project. I have used this for same project but I bought a new domain for my project. So I want to use my theme there. So If they dont Allow this it is redicolus. How can I contact with author?