Is my Ring hub my problem?

I'll start with my most recent problem. Ring Mailbox sensor. Device Health shows 'Device Status: Online, Bridge Status: Online, Signal: Good. Antenna is 40' unobstructed LOS to the bridge through a glass window. It will work 2-3 days then no notifications for a few days to 2 weeks. I can pull the sensor out of the mailbox and get a 'motion' notification.One Floodlight Cam (1st Gen) comes on for maybe 30-60 sec, off for 1-2 sec, back on and does that all night. That stops around sunrise, but can begin at sunrise or 2-3 hrs after sunrise. I hav no schedule set.I can walk outside past a doorbell camera and two security cameras (one 1st gen, the other 2nd gen). About a third of the time, all three give notification. Mostly, only one gives a notification (not always the same one). There have been times I've walked around my house past 7 cameras and none or only one give a notification. One camera (15' through one exterior wall) will give frequent 'offline' notifications. There have been times I get a motion notification 2-3 minutes AFTER the person walks under the camera.Is this a hub problem or do I have multiple devices going bad?