On the back of your AirFloss, there is a small air vent in the reservoir hatch. If the air vent is clogged, it will reduce the water flow. A clogged air vent is causing the AirFloss to work less powerfully.
To clean the vent, follow the steps below:
Take a damp/moist paper towel or cotton swab.
Wipe along the inside edge of the reservoir door opening, especially on the top area.
Rinse well with cold tap water and ensure no debris/dust is left.