First thing
#RequireAdmin
Second: Make sure you are using Au3info coord mode in client
For this, go to Au3info settings>coord mode>client
Third: Change the $title = "MEmu Poke" or whatever and try this
Code:
#RequireAdmin
$title = "MEmu 2.3.1 - MEmu_3"
WinActivate($title)
Sleep(1000)
ControlClick( $title , "", "", "left", "1", 89, 125)
This code will open 1st icon of your MEmu ...Make sure you replace the $title