This error indicates you are trying to activate a group license on an old version of Geneious.
Group licenses are only compatible with Geneious Prime 2020.2 and later. If you try to activate the license on an earlier version you will receive the following error:
This license has activated a feature which is not currently installed: group_license.
You may need to install the associated plugin using Tools / Plugins from the menu.
To fix the error, go to the Geneious Downloads page and install the latest version of Geneious Prime.