[. . . ] [. . . ] Activate the opener only when door is in full view, free of obstruction and properly adjusted. Press and release the green "Smart" button on the opener panel. If you release the remote control push button before the opener light flashes, the opener has not accepted the code. Press and hold the "Smart" button on the opener panel until the green indicator light alongside turns off (about 6 seconds). [. . . ] [. . . ]