If you have purchased a Permanent License (or Licenses) of the globalSAN iSCSI Initiator, you will receive an email after the purchase indicating how you can retrieve your license(s).
Please check your SPAM folder if you are unable to locate this email.
If you are still unable to locate this email, you can retrieve and/or activate your licenses by following the steps outlined at How do I activate my Trial or Permanent key for globalSAN Initiator?.