Nothing else I can think of...some snakes (especially BPs) can just be fussy at times. I have no such problems with my rat & corn snakes, or my Aussie Spotted
python, lol...but this time of year my desert rosy boa refuses 2 out of 3 offerings, and my Texas longnose snake will skip all meals for a couple months. I never
had trouble with the BCI I used to have either, nor with king, milk, gopher or bull snakes. But you "signed up for this" with a BP, sorry.I used to have a
group of ball pythons, I do sympathize, they can be so frustrating.
Some here have also mentioned lengthening the time between meals offered, so they might feel a little more hunger & pressure not to miss a meal? Maybe that
combined with more light? Let us know how it goes & what works for you?