Never heard about Steinberg offering free Cubase software to anyone.
FYI… the software links in the link you posted are upgrades for existing installed Cubase software versions.
You do know that they offer discounts for “education” customers.
FYI… the edu version of CB Elements 10.5 is currently listed as $66.99 and no dongle is needed. The dongle Itself costs $27.99
Regards. 