Why can't Samsung mobile phone cool dog music SMS notification ringtone get the system ringtone?

Samsung mobile phone cool dog music SMS notification ringtone download can not be downloaded into the system ringtone setting error.

1, open the cool dog music software in the mobile phone.

2. After entering the main interface of Cool Dog Music, click the three icons in the upper left corner.

3. In the pop-up window, click the ringtone.

4. Enter the ringtone interface and drop down the interface to find your favorite music.

5. After determining your own music, click the logo to the right of ... music.

6. After clicking, a window will pop up. You can choose whether to set it as incoming call, notification or alarm clock according to your own needs.

7. After clicking, it will return to the previous interface, indicating that it has been set successfully.