Dasaita Android Head Unit Volume Issues

I recently purchased the Dasaita Android Scout HD 11.6" head unit for my 2019 Tundra 1794 edition. The unit has great picture and sound, but when I receive a phone call when listening to music the volume is extremely low. If I adjust the volume for the phone conversation, the radio is extremely loud when I hit the end call button. I have tried adjusting the Bluetooth setting from within the Factory Settings, but again, this increases both the music and phone conversations equally. I need the ability to raise the phone conversation volume without increasing the music volume. Any help will be greatly appreciated.

For example, I listen to music at volume level 10, but when I get a call I raise the volume to 16 to hear the phone conversation. When I hang up, the music volume is now set to 16 instead of 10, which is extremely loud.

 

Did you ever find a solution?