On your AC11 disk you should have a "WIBU" folder that has the setup files for the WIBU drivers.
These should get installed when you install 11 but they can be installed separately.
Sounds like you then need to install the Codemeter enabler as well.
You won't need the green WIBU key anymore - just the drivers.
Have you checked your Codemeter key with the License Activation program to ensure it has been programmed with your 18 license.
New keys are usually supplied with no actual license on it.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11