If a node on the domain tree (under the Customers tab) does not expand when clicked, group and client information on the Worry-Free Business Security server and the Trend Micro Remote Manager server may be out of sync.
To resolve this issue:
Go to the Customers > [customer] screen.
Hover over the node on the Products tab that does not expand.
Click the Settings icon ().
Trend Micro Remote Manager instructs the Worry-Free Business Security server to resend the group information.