Flood sensor notification sound bug

My flood sensor keeps "forgetting" the configured notification sound. I have set it to "siren" but it keeps doing the "spoken warning". When I set the sound and test it, it works. But after some days or weeks the sound a) either get reset and I can see the "spoken warning" selected in the app even I never selected it or b) "siren" is still selected but when the alarm is triggered it plays the "spoken warning" anyway. (Please note that I am talking about the sound that the base station is playing.) To me this seems to be a bug. And I would also like to point out again that the flood alarm notification needs not only bugfixing but also improvement : https://community.ring.com/t/allow-more-options-when-a-flood-sensor-is-triggered/167402 I just had somebody forget to close the tap at the washing area. The alarm was properly triggered but nobody of us heard it for more than two hours. We live close to a river and I bought this sensor to get notified when flooding happens. We will probably all drown before hearing the alarm.