what is your bedding made of? did you pre wet the bedding before mixing it all together? most do not feed citrus because it's a natural anti microbial. banana peels are great! generally, things that have higher amounts of natural sugars like banana, apple, carrot, sweet potato, etc are broken down quickly by sugar feeding microbes in the bin and create the "slurp" that the worms love to feed on. also, did you provide them some grit? a quart of sandy loam soil will work, rock dusts, oyster shell flour, etc, which will aid their digestion.
my worm bin recipe
1 part leaves, 1 part peat moss (both pre soaked/hydrated)
1/2 part pumice
1/2 cup oyster shell flour per cubic foot to help with maintaining steady pH
1 cup rock dust per cubic foot
mix all ingredients thoroughly.
i fill about 8-10" of bedding into my tote. then i'll put down a light layer of outdoor compost and a quart of sandy soil (the worms love compost), then i'll add any scraps i have (preferably ones starting to break down already or will be quickly broken down like pulp from my juicer). I also sprinkle some cannabis leaf meal, kelp meal, greensand, OSF, and coffee grounds (couple TBSP of each) on top of the food scraps. then i take the remaining couple inches of bedding and lay that on top, put the worms on top of that, and shine a light on it for an hour or so to make them dive down into the bedding.
hope that helps.