Ring pro doorbell no longer recording at start of detected motion

Installed a Ring Pro doorbell after Christmas and it worked great. It would pick up activity on the far edges of the set detection area and I could easily see the duration of the activities. Mostly people just walking by. However, this week it started to not capture the start of the motion, and the recalled videos would just show me the person walking out of the frame. Or, it starts the video with the person smack in the middle, not having captured the start. The camera lenses is clean, and we've not had any internet interruptions. No settings have been changed. What do I need to troubleshoot?