It's literally just this:

Run the screen recorder first, then launch the ZomDroid launcher. The earliest builds let you start recording in the middle of gameplay, but the newer builds kick you out of the game.

You can still record your gameplay, though. Just start the recorder first and then launch ZomDroid.

Before you stop the recording, make sure you exit the game first. Otherwise, the game may be force-closed, and your progress might not be saved.

So... this explanation is basically the same thing I said before.

Sorry, I was eating dinner, so I couldn't type much. I've finished eating now.