Google App Store does not allow downloading some app and showed
This app is incompatible with all of your devices.
The message was shown and I was not allowed to download because payment cannot be made from my country of residence.
According to this How To Geek guide, I could Install the App’s APK File and sideload it.
The following two sites helped me download the APK I need.
Applications incompatible for my XiaoMi Note 4G
- Textra SMS
- Go SMS Pro