Switching from Cloud Zoo

If your computer can’t be connected to the Internet, then you can not use the Rhino account Cloud Zoo.
You can use stand-alone licensing on a single computer or your IT staff can setup floating licenses using the Zoo over the LAN.

This should help:
https://www.rhino3d.com/6/new/licensing-and-administration

There are no other licensing options. We don’t have anything specific for defense contractors, just the three we keep describing.

For several days Rhino 6.7 could not refresh license despite good Internet connection.
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In Rhino, save your work, type Logout and Rhino will close.
Then start Rhino and Log in again.

I suspect your account login is about three months old.
This will refresh it and then see if your license is refreshed.