An update last evening resulted in Android devices being unable to open calls.
Active response for the modern first responder
In order to use Active911, your organization must create an account. This is free, and takes 24-48 hours. If you like what you see, you can either remain free or convert to a paid account for extra features.
Once the account is created, you'll need to have your dispatch center send alarms to a special kind of email address. Most centers have no problem doing this, and we are happy to assist.