Can I transfer my dongle licenses to Online Licensing?
The License Server version 4.5.1 introduces the ability to migrate your V-Ray 3 licenses from a physical dongle to your online Chaos Group account. This means that once transferred, your licenses will be obtained over the Internet without the need for a dongle to be plugged into your machine.
The following article provides information on dongle eligibility and a step-by-step guide of the migration process - https://docs.chaosgroup.com/display/LICENSE/Transferring+Dongle+Licenses+Online
If you don't have the "migration" option active - please contact CG support.