Ring without Activity

Hi-Have had doorbell for several years. It has worked as expected. Had it set to provide motion alerts and activity alerts via my Chime and Alexa. Couple weeks ago, it started going off (middle of the night and middle of the day) with no one at the door (confirmed with other video cameras as well) saying that someone was at the door. Turned off motion detection and it continued to happen, although the only thing I can figure is that it is saying someone is at the door when it is a motion (even though I have all those alerts turned off). It is sending this alert to both the chime and Alexa. I brought into house and buried under a pillow. It has reduced, but still is happening. Much to the pleasure of my husband, in the middle of the night. Last night, pulled chime from the wall socket. Waiting to see what happens, but how do I get a working doorbell again? What do you suggest I do?