If it has only been about a week and the seal looks good after doing the flashlight test, I don't think you have anything to worry about. Some humis can take a couple weeks to properly soak up enough distilled water to maintain a stable RH where you want it to be. If I were you I would just put a shot glass of water in there or a wet spounge on a plastic bag and leave it alone for a couple more days (don't open it to check). It took me at least a couple weeks and more than a couple cigar purchases (you need to keep the humi well stocked to keep the RH stable, at least thats been my experience) to get mine to settle in, and now it sits at a nice 65% with very little maintenance. Good luck!