Please make sure your flex link is connected to the app. This is done by seeing the Bluetooth logo in the upper right turn blue.
From the main screen shown in the far left picture please tap on locate light.
The locate lights screen will display. Depending on the range you would like short range = 5-10 feet and long range is 10-20 feet. Please select the distance you would like to read for lights around you.
Once you have selected a read distance ids in the area will start to come in.
Tap on the one you wish to name. That light should blink to indicate witch one you would like to name. Name the light then press add.