Help! whirlpool not cleaning and soap left in tray

I have a whirlpool gold QP III that is acting up it is not doing a good job at all some dishes seem to come out as they went in Dirty. The soap is not being used up as well it seems to just dribble out the soap tray I have tried switching to many differrent soaps but no help this has been going on for about a month any help is great I am a novice at this..

MY model # is GU1200TXS0