Status: I opened ticket 567655 with Wyze Support. They said they referred the issue to Development weeks ago. I have not been told if anyone has been able to reproduce this issue, much less working on a fix. I do know other customers are experiencing the same issue though.
I can no longer set the “Is left open” or “Is left closed” options in the Contact Sensor’s Notifications page. (Opens and Closes work fine.) I’ve tried setting 30 seconds, 5 minutes, waiting at least 10 minutes for the setting to be saved, resetting and rebooting everything I and Support can think of. Those settings are never saved nor acted upon.
I have an existing Contact Sensor which still has the “Is left open … 30 minutes” setting specified, but I can not modify it (e.g., 5 minutes, 30 seconds, etc.) nor does it send notifications anymore.
I only discovered the issue when another of my contact sensors died and was replaced (under warranty), and I tried to set up notifications for the replacement sensor. So I have no way of knowing when the bug was introduced.
Android app: 2.10.72 - 2.12.3 and, presumably, beyond
Contact sensor: 22.214.171.124 - .53
Pan Cam: 126.96.36.199-.104