Moistening and cleaning performance is insufficient

I have in every room are a digital hygrometer. The unit was now 6 weeks in continuous operation and creates just an increase of 5% Rel. Humidity (open hardwood floors, lots of real wood furniture). In the beginning I was told that in a dry room environment to once must saturate everything. That makes sense! Nevertheless, 5% are absolutely insufficient for over 6 weeks! The more expensive Ventas create there probably more. The cleaning performance is woefully inadequate! I have the device in close proximity to a laptop and printer in each high-gloss black. The dust on these devices is the same as when I have not had the Beurer running. Then this device no longer makes sense. In addition, the fan from stage 2 chirps annoying. The arrangement of the air flows has not been covered properly. The cubic unit has left and right intake ports, front and rear, the exhaust openings. This leads, in view of the small size devices to interference of the air streams. Particles in the air are more likely to be blown away by the outlet openings from the device, so that the weaker suction barely able to record something. Set the device times in the translucent through a window evening sun! Here, the effect by the illuminated air particles is nice to see. The arrangement of the air inlets / outlets also prevents you with the back (opposite side to the display) can put in walls or furniture near the unit. The danger is too great that one case a moisture damage (if it even moistens ...) fetches as the unit as described above, the front and rear blows. The acquisition policy with respect of Beurer. Extension Aquafresh is the day before yesterday, as the manufacturer, the only remedies, pretty expensive, sells through its website. If I can buy the red giant the box already, then the water without additional postage should stand there on the shelf! For me, the unit is worthless and I have returned there. In its place now enters a second Comedes LR 200 and the good old radiator humidifiers. Always works and the air is clean!