Happy 4th of July to the people on the left side of the "pond"! Condolences to those on the right side of the "pond"
I want to post an update. So, took a close look at the front plate on the skimmer. It clearly looked like it needed replacement as some of the screws at the bottom had rotted away. I drained the skimmer box and there was no leak in there that I could see. I took out the old housing with the plate, removed the rotted screws, old silicone and replaced it. I had to buy new similar sized screws (I don't know exactly what type of skimmer I have). I cleaned that whole area and put in loctite S30 polyurethane sealant for roof and chimneys (b/c some guy on youtube said he liked it). Others seem to put black silicone, but some said that is not as strong as polyurethane. In any case, everything is back on. I couldn't put new holes into the liner where the screw went in and tried my best to align the liner so that the screws go straight through the old hole in the liner. I'm not sure if every screw went through the original hole, but used lots of sealant just in case it needed to punch through and create another hole or make the exisiting hole larger. I let everything dry overnight.
I've started filling the water again and we'll see tonight if this fixes it.