Due dates are being automatically changed

look at due date, and after 1 day all card’s due date changed to one day before of actual (look at image below)

I don’t want to use algorithm to learn these cards, I just use anki as task scheduler and set every cards due date manually

I don’t know if this is a feature or anything else, please guide me, I don’t want that due date automatically changes

this is info of one of card