Notifications Unavailable

My ring and motion notifications suddenly stopped working last evening. Instead they were replaced with vibrations only. I am able to choose the type of vibration from the list, but no matter what ring or motion notification I choose, when triggered only the vibration occurs. I have cleared the cache and have disabled and re-enabled my video cameras, but neither action has helped. Interesting however, the ring and motion notifications on my wife's phone for which ring is shared with mine, work just fine. Both phones are Huawei P30.Home and Away modes also work fine but all video notifications are still only vibrations. Not very useful for wake up calls on Home mode. I need some help here please. duggo