Typically, when an Admin By Request tenant no longer has any paid licenses, it will fall back to become a Free Plan tenant. This means only 25 workstation licenses, along with 10 server licenses, will become available for use.
The implications of this are:
Only 25 endpoints will be visible under Endpoint Privilege Management
Only 10 servers will be visible under Endpoint Privilege Management
Only 25 endpoints will be available for remote access under Secure Remote Access
You will not be able to manually delete registered devices from your inventory list.
Access to Technical Support is removed (you no longer have the option of submitting a Support ticket from the portal)
Note that you can still contact Sales personnel via the chat function of the adminbyrequest.com website
The priority of the auto-update feature is lowered for your tenant
For the 25 available licenses on the devices where the ABR client is installed, both end users and portal administrators would be able to continue as normal; request an elevation, approve requests and so on.