Unable to hear audio portion of alerts
After using the app for months, I was suddenly unable to hear the audio alerts except by using headphones. So I went to the Genius Bar at my local Apple Store, where a nice young man quickly solved my problem. Apparently the ringer for alerts on my phone is separate from the ringer for my phone and the ringer for alerts on my phone was turned off. You can turn the ringer for alerts back on by using the ring/silent switch on the side of the phone but it must be done while you are using the app.
gkf2000 about
CodeRED Mobile Alert, v3.002