Delete incompatible ScreenFlow version from MacOS Sierra
Removing ScreenFlow from Your Computer

To uninstall ScreenFlow, simply move the ScreenFlow application to the trash. (The ScreenFlow license is stored separately, so you do not need to re-activate your license if you reinstall ScreenFlow.)
To completely remove ScreenFlow from your computer, move the following files to your trash:


/Applications/ScreenFlow
/System/Library/Extensions/TelestreamAudio.kext
/Library/Preferences/net.telestream.screenflow.plist
~/Library/Preferences/com.vara.screenflow.LSSharedFileList.plist
~/Library/Preferences/com.vara.screenflow.plist
~/Library/Preferences/com.vara.screenflowhelper.plist
~/Library/Preferences/net.telestream.screenflowapp.LSSharedFileList.plist
~/Library/Preferences/net.telestream.screenflowapp.plist
~/Library/Preferences/net.telestream.screenflowhelper.plist