Well as of tonight I did not see the crabs at all. I would assume they are just hiding. I put the moonlights on and after an hour or so I did see one of them. I put food in a glass dish hopefully they are able to climb in it to find the food and aren't afraid to do so.
Well between yesterday night and this morning I only saw a crab twice. Once when the lights were off last night and the moonlights were on. The other time was this morning when turning the lights back on. I would assume they are just hiding eating in the moss.