I am currently having this same problem...i figured it was because of all the Thunderstorms recently.

15 days now & still no interest, i even offered live food at night, with nobody around or sunlight & bp wants nothing to so with it.

Temps humidty everything is perfect, & she has eaten every feeding day on to the minute except for now.

So i am adding tongs & even a smaller rat next time, i switched her to a comfortable tub tonight i feel the 40 gal i had for her was to large.

Puzzled but still trying, but not forcing! lol