The button on the back of your Grobo has multiple functions.
See Inside: Pressing the button once switches the fluid glass from opaque to transparent so you can peek at your plant. Learn more about fluid glass.
Unlocks Your Grobo: By holding the button on the back of your unit for 3 seconds, your LED light should turn blue then your door will unlock. Learn more about unlocking Grobo.
Reset WiFi: Holding the button for 8 seconds will disconnect your Grobo from the Wifi. This is used when you’re moving your Grobo to another network. If you do accidentally hold this for too long and disconnect your Grobo, you will have to reconnect your Grobo through the Settings page on your app.