"No link to dispatcher"

Installed last night. Activated monitoring, Reset base station about 20 times. Still get error msg.
I have "very strong" coverage according to t-mobile base is practically outside now after relocating several times.
Website says to call. But it doesn't mention the business hours so guess I have to wait till 9AM
The extra siren is dead out of box looks used (paid for new).
Very frustrating. Not a great start for SS