Hello There,
Thanks for writing in! The best you can do is to hand over the license code in your next reply so that we can remove it from your account. You can then give the license code to your client and she/he can use the license code to register for her/his own account in the X support community.
You may also provide the username and password for your client along with the license key so that you can hand him/her over the account details that she/he can use immediately without registering.
Hope this helps.