Washboard

I keep getting a notification about washboard abnormal water level and each time I follow the instructions and video posted I check the dirty water tank and you can see it draining well. And the washboard does drain. But when the reboot returns to clean washboard is full again after performing extensive diagnosis as per the troubleshooting help area the troubleshoot area said to increase dirty water suction power and now I can’t find how to increase dirty water suction. I’m getting frustrated.