They had a lot of useless supplies and food for the crabs and they truly thought they were taking excellent care of them. I asked when the crabs had last molted and they didn't know crabs molted...

Both crabs were in shells not traditionally worn by crabs, the types with long narrow slits for openings. Both crabs are small, but were in large shells that they were barely hanging onto.
I skipped the water pool test with both crabs due to their shells. I put them into the shell shop of my 40B and both immediately changed shells. One chose a rather too big, clunky unpolished turbo and the other chose a slightly too small Babylonia.
I didn't get pictures because you couldn't see them in their shells and I wanted to get them into proper conditions ASAP.
Fingers crossed. They are obviously resilient to have lived for so long in poor conditions.