Nat,
My PB did the same thing. On mine the pipe is connected into the back of the skimmer, at a hole at the water line, opposite from the skimmer mouth.
Mine is connected via a sprinkler valve so that when I push a button on my PC, the valve open and adds water to the pool.
The downside that I did not understand at the time is that it will just blow the skimmer door shut and blow anything in the skimmer basket back into the pool...
I would have been a lot better if the pipe had just gone into the pool itself, like a pool return line.
What I have to do now is ... Clean the skimmer basket, place a brick on the skimmer door and then turn it on.
Oh, yes... I found that I had to add a removable plug to prevent all kinds of stuff, including a small snake from going up the input pipe with the valve was off..
Something I would do different if I had known the issues up front...
Thanks,
Jim R.