Entry sensors not triggering alarm

Everything worked as it should have for years. Then, suddenly, at 8:42PM last night, the front door sensor stopped working. Replaced the battery and tested it.  Base station recognized it, but it still wasn't working.

I got the blue light when the door opened and closed, but no chime.

I called SS this morning and they're sending out a new sensor. In the meantime, I switched out the door sensor with a window one and now the door sensor is working properly.  

Whew!

@Fmsamos from your follow-up comments, I'm glad that you were able to contact our Support team, and seem to have determined that this was a hardware issue. Hopefully that replacement sensor does the trick.

Though you mention sensors in your initial post. Were there other sensors having trouble? We'll want to troubleshoot those as well!

I am having the same problem. With 2 calls to SS they  cannot cone up with a fix. Will make a 3 rd call today. 

I have been having this same issue on and off. Most of the time, my front door entry sensor works perfectly fine. However, I have had it happen a few times where I've come home from work and there is absolutely nothing. My alarm is armed to "away" when I go to work, and I often disarm via the key fob. I have a small apartment, so the base station is close enough to the door that I can vaguely hear the "alarm off" message. However, in this case, I do not hear the message and proceed to open the door, expecting an entry notification (if successfully disarmed) or a countdown. Upon entry, the system is completely silent. I check the keypad and see that it is still armed in "away" mode—no countdown, no indication the alarm is off. Essentially, the system acts as if I had not opened the door at all. It is not until I go into the app to disarm that the system starts responding again. It greatly worries me that it happens randomly and with no warning. Anytime this has happened, I get no app notification regarding any lack of connection between the devices, unlike other times when I have had disconnected sensors (which still make a beeping noise upon entry in those instances). It is incredibly concerning to have an alarm system that might not work in any given moment.

I brought this up to a chat agent, and they directed me to call for a replacement base station, stating there was a firmware issue causing devices to lose communication. Unfortunately, by the time the chat ended, I had temporarily fixed the disconnection issues, so the phone representative denied any issues with my base station and denied me a replacement. Surely enough, just five minutes after the phone call, another device got lost connection. I reset the device as a temporary fix, but issues arose again just two days later, and these were with app notifications, at least. However, I was not home when this happened, and there is nothing I can do when I'm away from home. In many instances, I do not even get notified of entry sensor disconnection at all, and I come home to an unresponsive system, as described above. That's why these temporary fixes are not enough. There is obviously a greater problem that SimpliSafe will not help me resolve.

@slipperypear @GCGHoldings 

In case you follow your posts here, they had a base firmware update, 2.18, that hiccupped.

Read the many posts and complaints.

The only current temporary solution until a fix is released, is base swapping with an older firmware, 2.13 etc. and don't update it until a fix is released. Means pairing all sensors etc. again.

Or live with it and wait and hope for a fast fix.