As mentioned, I wouldnt worry a whole lot just yet. Beeps are notorious for going off food as I am sure you are aware. See if you can get more information from where you got him him and try to mimic those conditions for his comfort and slowly change things to how ever it is you do husbandry. I fostered BP some time ago that went off food for 8 months, a young adult male, that by the 4th month lost weight and had to be force fed chicken baby food through a syringe and tubing.......not fun. Eventually went back on food but the move and different conditions were enough to upset him.