"Warning - Entry Sensor Open"

We, like OP, have had changing issues.  These are not consistently one sensor, but multiple sensors at different times with different warnings, in our case.  We have talked with Support until we are blue in the face.  Every single sensor was updated / uninstalled, battery out, reinstalled, while on the phone with support, just 2 days ago.  Yesterday "multiple sensors are not responding" and "window sensor open" were messages we received when we armed "Home".  Tonight it was, "Sensor 2 is not responding."  Our front camera didn't record any activity as we went in and out multiple times this afternoon, until the 8th time out.  And then, as once before, it did not pick up the first 20% of the activity.  Then the back camera came on and nothing was outside.  Ugh!  It has been a nightmare.  I don't believe I can trust this system to protect me.  Oh, and tonight an "app error" was going around, per SS representative; "many people are affected by it."  Yes, my husband's app was not working and mine, 12" away, was fine.  I don't trust that I can leave and know my house is secure; or worse, that I am secure in my bed at night.  So far, this system is not worth what we paid nor what we pay per month for the active monitoring.  It has been way to much trouble and effort and aggravation, new equipment, replaced equipment, poor quality recordings, etc.  It is tiring and frustrating.  I wish someone would hear us and just replace every single last piece of equipment and let us start over.  But it seems, from this thread, that these problems are quite "normal" for SS systems.  That truly does not give us comfort.  Maybe next time we will go with some other company.

@AuntiAlli​ I'm very sorry to hear about your experience thus far. As a security company, we want you to feel safe with SimpliSafe in your home. The "Entry Sensor Not Responding" error could be due to two reasons: either the sensor's battery needs to be changed, or the sensor is too far away from the Base Station.

I know you mentioned that you've already removed your sensors' batteries with our Support team, so I would try checking the communication between these sensors and your Base Station by putting your system into Test Mode. This article in our Help Center will take you through the steps of testing your sensors, and provides additional troubleshooting steps.

Regarding the "Entry Sensor Open" message, as mentioned by krstrick, if the Keypad still displays a notification that a sensor is open, it could trigger the Base Station to make that announcement as well. Clearing out these notifications is a good first step!

However, an Entry Sensor can also show a false "'open" status if either part of the sensor is placed on a metallic surface, as this demagnetizes the sensor. Are any of your Entry Sensors placed on metal? If they are, I would recommend adding a little padding between the sensor and the metal surface. This can be anything like a piece of cardboard or an additional layer of adhesive.

As a battery saving measure, the Outdoor Camera enters deep sleep when it isn't in use. To wake up, the camera relies on its communication to the Base Station; so troubleshooting the Base Station and cameras' connection can help to improve wake up and recording times. To do so, I would ensure that there aren't any dense physical objects in the way between the Outdoor Cameras and Base Station - like thick stone/brick walls or heavy appliances - and that the Base Station is away from other wireless devices.