I cannot remote control a Mac running macOS Mojave 10.14 from my Windows 10 laptop. 
I have followed the instructions in the article here:
https://community.teamviewer.com/t5/Knowledge-Base/How-to-control-a-Mac-running-macOS-10-14-Mojave/ta-p/44699
but everything is fine.  All the permissions are already there and ticked.
I have also tried reinstalling TeamViewer on the Mac.  Still no dice.
What next?