Well...

You will tell me what to do with a pale cat that begins to moan and at all.

Cat castrate (I seriously: he will not be offended).
Stir on a silicone filler. This will reduce the odor from the pot and reduce the regularity of its cleaning.
Move from kitteket and pork to normal feed with the addition from fecal onysm (fluid do not think that this is the criterion of feed norms. This is the Yokka Cat standard. where then 300-400 re per cat per month and no shit in the composition. I personally feed a Canadian GO but the price is not for everyone).
Regularly feed the cat his food on schedule and give nothing more, even if he asks. After some time, the cat will learn from the unplanned bite and stop asking for it.
Install ventilation in the toilet.