We have version 92119.

Last week we installed agents on 3 PC's. However we reached our licence limit so these devices never showed in the console.

After we applied more licences, the PC's still did not show in the console, even after several reboots.

We were able to install agents on other PC's and the came up in the console.

The only way we could get the 3 PC's to show in the console was to repair the agent install.

To summarise - agents will not register if you install when over your licence limit, even when you add more licences.