Take the lid off and have and look at the top of the soap box. There is a steering mechanism on it to direct the water into the different compartments. This may well be the source of your problem.
😀 Thanks again my whirpool awm8163/3 had recently stooped directing water properly.Again I thought this would be expensive so we were adding powder to the wash and softener if we were around. Have just opened top,after disconnecting power of course,and found little brown plastic device which connects to water director had sprung loose THANKS AGAIN