Can't reset Tampered Motion Sensor

We have one motion sensor that continues to show Tampered. We've remounted it in a different location, taken out the batteries, reconfigured it in the Ring app, triple checked the device is clicked into its housing; it still shows tampered. Is there another way to "hard reset" a motion sensor? I know for a fact it hasn't been tampered, and the little tamper sensor on the back of the device works (I can depress it, simulating the plastic pointy piece that depresses the sensor when properly mounted.) I even REMOVED the device completely from the system, having to Remove it and depress the tiny hole to confirm removal. As I was adding the sensor back, as if it were a new sensor, I got yet ANOTHER tamper alarm! 🙄 I'd rather not have to CALL tech support... Surely there is a some way to fix this? Thanks!!👌👍👍