If your WiFi signal strength is low, consider moving the router closer to the OtO (if possible) or looking into a WiFi range extender or mesh to provide a stronger signal.
You may also want to check for any wireless interference that could be interrupting the router's communication with the device. Often the placement of your device in relation to your router can contribute to connectivity issues. Materials in your home can interfere with the connection between your router and your controller, resulting in intermittent connectivity or unexpected disconnections. It's important to remember that signal interference may occur outside stucco homes, as some stucco incorporates metal lath.
If there are any materials that could be causing interference, you may want to consider moving your router to a new location. Sometimes even moving the router to a different location in the same room will help.