I have the same issue with all my contact sensors, most up to date firmware and the beta app. I did a bug report through the support chat.
Notifications - “If left open” and “If left closed” notifications do not work at all.
I can change them, but they won’t save changed. I did a chat with support and we tried troubleshooting everything, removing the bridge, rebooting the camera, reinsert bridge, delete sensors, re-add sensors, check the batteries, remove and reinsert the batteries, check the firmware, etc. (we spent 45 minutes with various tests). The support agent thought the sensors must be bad, but I am REALLY confident it is not that.
The sensors definitely work great. Open and close notifications work fine.
I recently found out that I can even create a “Rule” that if the sensor (front door) is open or closed for X amount of time to have it turn on a light to let me know. It just won’t work with the notifications.
It is definitely the beta app that has some bug in the code for the contact sensor notification. I got new contact sensors, and same thing. It’s got to be the beta app code. Which is fine, it is “BETA” after all, so I’m not upset, and figured out a temporary work around to inform me of left open/closed for X amount of time by doing rules instead of normal notifications. I just hope Wyze sees this issue and works on the fix, which should be really simple if one of the developers actually take a look. I’m not too worried.
FYI: I did my bug report on 4/30/2020 Ticket #565718 has an entire recorded chat of the issue if they want to refer to any of it.