MyChat for Android application logs out

Hi Recently purchased license for our company, tried installing the android app from playstore,
The application works fine when we are live, but if we minimise the app logsout and we have to relogin every time to check chat messages, this makes us to miss any chat messages realtime as there is no popup when we are not active, say for egsample like google hangouts.
How can we keep the android application live ?
The application works fine when we are live, but if we minimise the app logsout and we have to relogin every time to check chat messages, this makes us to miss any chat messages realtime as there is no popup when we are not active, say for egsample like google hangouts.
How can we keep the android application live ?