Question about Olimpia Splendid AQUARIA S1 10 P

I bought this because my 6 year old Stadler Form Albert Little no longer dries. The Olimpia appliance never has a drying capacity of 10 litres/24 hours... After 12 hours it has just run out about 1-2 litres at a set 30% humidity, the device doesn't even manage to bring the room to 50%, where before the Albert Little would have managed this without any problems within 12 hours with the same drying capacity according to specifications... What am I doing wrong? There is hardly any water running out even though the room has 50%+ humidity.