Restarting the Abacus POS app requires force quitting (or "killing") the app and then reopening it. Follow these steps to properly restart the application:
Steps to Restart the Abacus App:
Swipe up from the bottom of your iPad screen and hold your finger in the middle to view all open apps.
Swipe away the Abacus application to close it. This will force quit or "kill" the app.
Re-open the Abacus application by tapping the app icon on your home screen.
By restarting the app, you may resolve minor issues and refresh its performance.