I logged in but didn't get free energy

To get free energy, log in during the time period indicated in the quest Get free energy from XX to XX and claim the reward in the Daily quests tab.

Moreover, this quest works according to the timezone set in your game profile (you can view it by tapping your avatar). If you have a different time zone set on your device, you may log in at the wrong time. To know exactly when you need to log in, synchronize the time zone of your device with the game.