Common Mini Humidifier Issues and solutions (Ultrasonic aroma diffuser Filter version)

Issue 1: add water in but no mist out - Cotton Filter is dry
Issue 2: Wet the cotton filter but still no mist out - Spring is missed
Issue 3: Filter is wet, spring is there, but no mist out - Tube not fully inserted
Issue 4: Filter is wet, spring is there, but no mist out - Spring installed upside down
Issue 5: Didn't do that before, but do the steps later, no mist out - Product damaged
Issue 6: Add water and essential oils But no fragrance