SimplyPrint Client is installed.
Open the dashboard at http://localhost:8000 to add your printers and connect them to SimplyPrint. The client may take a few seconds to start up after installation.
If you disabled "Start at login", start the client manually from Terminal when you need it:
"/Applications/SimplyPrint Client.app/Contents/MacOS/simplyprint-client" serve
To uninstall later, run the script bundled with the app:
bash "/Applications/SimplyPrint Client.app/Contents/Resources/uninstall-macos.sh"