System suddenly stopped working. Will not react to any sensors. App will not connect or control base station

A few days ago our system would not disarm via keypad or app. We called customer support, who had us reset the base station by unplugging it and removing batteries. After that the keypad would arm and disarm the system, but the app would just spin when trying to arm or disarm. We tried the app on multiple phones.

Additionally, we noticed the base station has since stopped chiming when entry sensors are open. We then tested the system by arming it via keypad then opening several doors, and the alarm did not go off! The base station seems unresponsive to all sensors.

Another hour long customer support call going in circles, and nothing is fixed. Base station still does not react to any sensors. Cannot arm or disarm system via app. When trying to adjust settings in the app it says it cannot connect to the base station.

We also made sure the system is connected to our 2.4ghz wifi.

Our system was working flawlessly for 2 years, now it is totally broken, even after 2 long sessions with customer support on the phone. Has anyone had a similar issue resolved? We will be cancelling our service if we cannot get this resolved in the next couple days.