Hello @abdulrashid123,
To activate the license in your new site please make sure the new site URL has been updated and saved in your Themepalace Account > Manage Sites.
You can also check the blog article here on adding and updating site address to use with your license keys here :
http://themepalace.com/tutorials/activate-themes-license/
If you are still having trouble with the license, you can also send your queries to info[at]themepalace.com
Hope this Helps,
Best Regards !!