There were reports that some Unity accounts did not get their Unlimited Licenses.

The reason was in that those accounts had "Paused" status while the licenses were issued to all accounts with "Active" status.

We did get back and issued licenses to all accounts which were left behind by this fact.

So, if you were a member of Unity on the day when the post (about Unlimited License for free) had been published, the licenses have now been issued to all accounts regardless see more of the status they had at that moment.

Please make sure you see them under the "My Licenses" page in your Unity account.

Best Regards,
AJAX a.k.a VictorT