We'd like to let you know that Google ran an update restricting permissions from various tablets running Android 5.0.1 or below. We've created a kiosk app version and recommend you update any tablet running Android 5.0.1. or below.
Please go to http://www.limecellular.com/app/ and download the new app by clicking the link below the download button. Be sure to do a clean install and unregister your license key before re-entering it. Moving forward, we recommend using tablets running Android 7.0 and below for your clients.