My P.O.P. is gone. need help again

Theres been very few days that no one has been in the pool. Its been 2-3 months since I have covered it. The other day was the first time covered. It wasnt a very sunny day and no one had been in it. I think it dropped 1 or 2ppm in 11 hours. If I remember correctly it has dropped uncovered full sun with no one in it. Its yo yoing too much based on replies. Just last night it was 9ppm covered and this mourning 8. No one in it yesterday except 2 frogs. the kids get out to go pee and so does the dog. It does drop sharply when we are all swimming. I would have to put bleach in it all day to maintain 10ppm

Well, Ijust got back from vacation. No testing for 7 days. Heres what happend. Had a neighbor add bleach every day and the pump was running all the time with solar cover in place.

Sat. Rained all day. Removed 2 inches of water, tested then left.

Sat FC 15ppm
Sun added 3qts 6%
Mon 6qts 6%
Tues she forgot
Weds 3qts 6%
Thurs 6qts 6%
Fri 3qts 6%

I got home sat at 1pm. Tested
FC 7ppm
CC 1ppm.
I really expected FC to be much higher with cover on and no swimming.There was about 1inch of rain added over week. Then I added bleach tested at night. FC 12ppm. This mourning it was 9ppm. Something isnt right. Im gonna test my cya again. I really dont know whats going on. i thought we had it under control.

Let me know your CYA level AND your water temperature, please.

Ben

cya 100
temp 83F

Ok.

Well, I don't know. I've recently seen some high demand here, but with different conditions. I could speculate, but I really don't have any solid ideas. Your chlorine use is higher than I'd expect, but I don't know why.

Ben