Sirens are not working.

I have a problem with the siren units. 

I had one that came with my system and it worked fine when I set it up. At the moment it's not emitting any door alert beeps like it used to.

I'm testing a particular thing with the sirens and noticed today they are not emitting any sound alerts and this seems to be a system problem, not the units themselves.

First, I wanted to figure out how to get them to go off in test mode, so I looked in the app, and everything looked fine with the device. There were no battery alerts or errors with the primary siren.

Once I figured out how to activate test mode on the keypad, and pressed the button on the siren unit, the base station said "Test signal recieved from siren" so the connection is fine - but the manual/documentation indicates there should be a loud test of the siren itself and that didn't happen. So looked again in the app and it suddenly said that the batteries were critically low. 

I thought that was weird, but might explain why it's not working right.

So I changed the batteries with fresh batteries, removed and re-paired the siren unit, and even tried hitting "refresh" at the top of the device list and it still reports critically low batteries. I thought this was weird, as they are brand new batteries. 

Okay, so I happen to have a second spare siren unit in the box that I had just bought. I decided to pair that and see what happens.

Same problem - even though it was brand new out of the box, and I had just pulled the battery tab, the app reports that it's batteries are critically low, and it also does not emit any siren sounds or door beeps. I also went through the test mode process with it, and same thing - the base unit confirms the test verbally, but no siren test and no door alerts.

So now, I have two sirens connected to the system, both reporting critially low batteries when  they are fresh, and although the base station is in communication with them, they do not emit door alerts. No amount of "refresh"ing changes the reported battery error.

I called technical support at Simplisafe and he told me "well, I'm looking at your system and it says here the batteries are fine. You probably have a glitch with your app. I recommend you uninstall it and reinstall it." I was not really pleased with this "solution" reinstalling an app when there's a flaw is not really a solution... but I did it. And it didn't fix anything. The sirens are still shown as critically low battery and they do not chime the door/entry alerts like they're supposed to.

I guess I just want to know if anyone else has problems like this or if I'm missing something.

The fact that a brand new, out of the box siren and fresh batteries in both of these units result in the same error, makes me think this is a system problem, not batteries, siren units or user error.