This theme does not work as a standalone application.

To use this theme, the installed Total Launcher is required.
https://play.google.com/store/apps/details?id=com.ss.launcher2

The application is used to switch WiFi, Bluetooth, Hotspot and sound profiles.
More Shortcuts (free)
https://play.google.com/store/apps/details?id=com.ss.moreshortcuts
You can also use a more advanced application Power Shortcuts (paid)
https://play.google.com/store/apps/details?id=com.ss.powershortcuts