Welcome to the forum.
You mean the teeth are bending outward? That's normal, don't have to worry too much. The trap sealed tight as long as the food inside is not fully digested.
I don't feed my VFTs, they'll lure and catch whatever insect that landed in the trap by themself, not necessary to feed manually. VFTs won't die without food (insect) for a long period of time anyway.
