CAM in SW 2018 Educational - serial number

Hi all.  Newbie to SW CAM here.

I'm a tutor at a UK university.  Reseller is Solid Solutions.

I've installed SWX Educational on my home machine.

I failed to select CAM on first installation, so guess what - no CAM add-in.

I went back to reinstall using Installation Manager and was asked for a Serial Number.  I entered the number I'd already used for the main installation, but it was not recognised.  Is CAM not available on the Educational installation, or do I need a different Serial Number?

Tim.

SolidworksEducator / Student