If there is no change even though the GYRO AMBIENCE TYPE is set to "STATIC" or "STAGE," the Bluetooth connection might be unstable.
Close BOSS TONE STUDIO for WAZA-AIR BASS, turn the WAZA-AIR BASS's power off and on again, and then pair once again as described in "Connecting the BOSS TONE STUDIO iOS (or Android)Android App to the WAZA-AIR BASS Unit" (PDF).