If you have some problems to apply tiles, please add every Quick Setting is in the top and then remove tiles you aren't interested in. Note: It does NOT work on Chinese ROMs. This is NOT app's fault. It doesn't work because THE MANUFACTURER didn't include TileService API. It won't work until that API will be implemented by the MANUFACTURER.
Take the opportunity to download the installer of Quick Settings 9.0.1-0 for free and take a look at users' reviews on Droid Informer. The app is designed for Android 7.0 and above. This application is totally safe for downloading. Simone Sestito is the official developer of Quick Settings that can be found in the Personalization category.
The latest update of the app was released on Oct 13, 2020 and this application was downloaded by over 0,5M users. Users rated Quick Settings 4.2 on Google Play. Some in-app purchases and ads are included into the app.
In users’ view, the strong sides of this application are an intuitive design, useful features, a screen freeze, battery optimization and awesome support. As users mention, you can notice minor bugs among the drawbacks of Quick Settings.