https://community.teamviewer.com/t5/Knowledge-Base/How-to-control-a-Mac-running-macOS-10-14-Mojave/t... It appears that the latest version of TeamViewer can only VIEW a remote Mac until unless you grant TeamView permission to also CONTOL it. As the instructions at the above link show, when you try to use TeamViewer to access a Mac remotely for the first time, you will be presented with a pop-up window asking you to grant the appropriate permissions in the Security & Privacy pane of System Preferences. Granting these permissions did not initially allow me to control the remote Mac so I removed the two TeamViewer items from the Privacy section of the Security and Privacy pane in System Preferences and then quit and restarted TeamViewer. The second time around (after enabling TeamViewer in the Privacy pane again when prompted to do so) everything starting working.
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