testing theme on designers site - require purchase code verification?

hello,

we have purchased a theme of author goodlayers
before uploading to main domain; we are developing website under our agency site (subfolder).
does this require purchase code verification. if yes, then what precautions need to be taken when we are actually making it live on final domain.

Almost certainly you will need to register and then de-register when you are ready to migrate the site

An author as established as @GoodLayers may well cover this in their documentation

thanks for reply.
@GoodLayers please share link to register/procedure and then deregister theme