Notification when left open

I push to be notified when door is left open but the accept doesnt save the setting once i leave the page with the option to put how long left open before being notified

Seems like the contact sensor is having a hard time transmitting to the bridge.

How far are they from one another or how is the signal strength … 1 …2 or 3 bars ?

Check the battery status on the sensor.
Reboot the cam that the bridge is connected to.
Reboot your WiFi.

It has to do with the app it dont save the option in rhe app its not far at all a room over

What app version are you using? What kind of device are you using?