Inconsistent/nonexistent tones

I have 8 outdoor security lights/cams. 6 work perfectly. 2, not so much.I have all 8 are set with Ring-Sonar as the tone. 2 of them will give no tone a half of the time. About a third of the reminder I get the “Door Unlock Notification” tone. Only for the remainder do I get Sonar. I’ve checked all 8 cameras a LOT. All are set to Sonar. Even when the tone is silent, the camera picks up and records motion.How do I get the cameras to provide a tone? How do I get the cameras to provide the correct tone?