Snails : Tropidophora cuveriana....specialists only, very hard species to keep in captivity..

not a lot is known about this snail and many are trying to source the correct food...try

1 feed Nori seaweed and porridge oats
2 vegetable food boiled and liquidised and mixed with a fine cereal, then smeared onto a hard surface. The idea is explained in :-

Krull P. 2006: Rearing tropical arboreal snails in the laboratory. Tentacle 14;3-5

also proffered by a russian breeder
In addition to algae growing on the stones, I cook them a mixture of spirulina nori kaolin and calcium, grind in a mortar, divorce with water and smear brush to paint on the walls of the terrarium-they eat it

SOME PEOPLE HAVE HAD SUCCESS WITH THINLY SLICED BOILED CARROT