If you have tone squelch enabled it has to have the correct tone frequency programmed to receive (usually a number from 88.5 Hz to a little over 200 Hz), or just make sure tone squelch is off.
Tone squelch is an additional type of squelch besides carrier squelch, the adjustment you set to stop the hiss from the speaker when there is no signal. Tone squelch keeps the speaker quiet until it hears the right sub audible tone.
Sub audible means it’s a low pitched hum that is too low to hear in the speaker, but the circuit detects it to turn on the speaker.
It’s used so you only hear the repeater you want to and not any other ones that may be on the same radio frequency. Not really essential on a hand held, but more useful on a base station with better antenna that may be able to hear multiple repeaters, or if band opens up.
I pulled it down from chirp. The upload matched whar they advertise. Maybe nobody is broadcasting?