Translucent button on Keypad

There is a clear, translucent button (or what I thought was) on the Ring Keypad up and to the right of the large LED ring (see uploaded image). I pressed the "button" and it did go in but it bottomed out and now will not move at all (in or out). The keypad is operating as it should but I didn't know if I have cause irrepairable harm and moved the Doomsday Clock forward 1 minute... or if it's no big deal.Thanks,Travis