Most of the time, offline mode is temporary and short-lived. You should be back online soon. If not, check the settings of the tablet:
Go into the tablet settings
a. Tap the clock on the tablet
b. Tap the gear icon to go into settings
When you run the app again you’ll need to re-enter the URL for your agency
a. Tap the http:// button and enter your agency’s url (Do NOT use the https:// button)
b. Tap OK