To pair your device with the app, you must access the Glassy Zone navigation menu, go to the SYNC screen and double-tap to activate Bluetooth and enter pairing mode. To make sure that you have entered the mode, check that the word SYNC has changed color.
Once Bluetooth is activated, access the app and touch the Glassy Zone icon (top left) to start the pairing process, during which the device will display a blue pairing symbol. Once paired, the app will notify you. From then on, the device's clock will show the same time zone as the one you are using on your Smartphone.