We just had a new above ground pool installed. We had it 3/4 filled and discovered a leak in the liner. The pool installers came, replaced the liner. We started filling again, about 3/4 of the way this happened (see pictures) The pool installer said it's normal and to go shake the upright. I told him I wasn't comfortable doing that and frankly I shouldn't have to. He said once the water warmed up it would work itself out. I really don't think this is normal at all. The pool is only 20 days old and I'm super frustrated. Anyone else think this is normal? Should I continue to fill the pool? I'm really concerned about the bottom by the upright. It looks like it's crushing down like an accordion.