I just had to redo the Bean Animal plumbing because of a leak that developed. I also moved the skimmer from the sump section where the drain lines entered the sump to the middle section. I guess all that caused the problem. I watched some videos that explained that pretty much any change in the system, chemicals, moving things, adding medication etc, will cause the skimmer to act this way.
The cup fills with water in just a few hours.
I'm going to let it run for a few days and check on it.
The cup has a drain at the bottom with a little cover. I can't just take the cup off with the water in it because of the lack of room. I have to drain it and then tilt it cup to get it out to clean it. All that dirty water drains right into the sump. I'm going to get some tubing that will fit over the drain so I can drain it into a container before I take it off.