@lalalandsynth Generally you supply Avid with your iLok user account id (probably an email or username), and Avid then put the necessary licenses into your iLok account. I assume you have done this already if they gave you the dev version already. You may need to update your iLok with your new licenses, and possibly activate them in the iLok software.
Then when Pro Tools loads it checks the iLok for a license - if your iLok is plugged into your machine of course...
You might have the option to assign the licenses to your machine, you should check (means you don't need the iLok).