First, please make sure that the adapter has power and is turned on. Under this situation, both the green light and white light are on. If the green light or white light is off, it is likely that the adapter is out of power, please try the following solutions: a. Charge the adapter for more than one hour; b. Replace the charger and try again; c. Replace the charging cable and try again.
For Android phone users, you should make sure that the Screencasting Assistant APP has been installed and opened, and you have agreed to the access request in the pop-up window.