On your device, open the GRUBBRR Kiosk app. Go to Settings (by tapping logo 5 times) and a popup screen will appear to ask if you would like to connect a reader. Press Yes. Press the Connect a reader button. Press and hold the button on the back of your Square reader until it flashes orange (about 3 seconds), then set the reader next to your device to pair. Press Pair when the Bluetooth Pairing Request pops up. Your device will then display that your payment reader is ready. Press Done to close the tab. Your reader should now be connected to your device. NOTE: If your reader is already paired with another device, you can long hold the button on the back to reset the device. Hold the button until the lights flash red. You can then proceed with pairing with your kiosk.