Water goes in reservoir, not thru hose to sump pump, leaking

Our dehumidifier fills up with water in the reservoir, even though a hose is hooked up for it to drain to our sump pump, so we have to empty it manually, constantly; also, now it is leaking from the bottom of the unit, and after I took out and emptied the reservoir, there is water somewhere else in the unit, and this is where the water is leaking out. Our unit is about 3-4 year old.