Ok this is the error for server, even though the BFI server is set with Airgap enabled:
The BES Server appears to be experiencing an error that indicates that it cannot access the Internet to download files or gather the latest Fixlet content.
This error could be caused by a number of different problems including:
The connection through your Internet Service Provider might be temporarily down.
The servers that host the Fixlet site content might be temporarily down.
If you have recently installed, uninstalled then reinstalled, or upgraded the BES Server, you might need to configure the BES Gather service to be able to connect through your proxy server
Note: You should run the BES Diagnostics tool on the BES Server computer under Start > Programs > BigFix Enterprise > BES Diagnostics Tool to make sure that all of the other BES Server components are functioning.
Note: Starting from 9.5.11, if the setting _BESServer_AirgapMode_Enabled is set to “1”, BES Server will not attempt to gather any external site and may not have access to internet.
And I’m not able to perform step 4 in your link:
Subscribe all computers that you want to monitor to the License Metric Tool fixlet site so that its content becomes applicable to these computers.
Log in to the BigFix console.
In the left navigation panel, click Sites > External Sites > IBM License Reporting (ILMT) v9.
In the pane on the right, open the Computer Subscriptions tab, and select All Computers. Click Save Changes. The IBM License Reporting.efxm file is created on the server.
It’s all greyed out with the radiobutton No Computers active which I can’t change.
It seems like I can’t upload any images, so there’s just this description