wastewater

so I have recently purchased the ICECAP K1-50 protein skimmer and i’m very confused. I set everything up just as the videos have said but but the water waste dump slide valve does not open or close causing the skimmer to over flow with water… does anyone have any idea what’s wrong with it etc?

I have a 4 stage BRS water saver system that’s around 5-6 years old now. I have it hooked up directly to a water supply with a ball valve on the product line so I can turn it on when I need it. For the wastewater, the line goes outside to a bucket, and just a couple days ago I noticed that the...