I desperately need help

So I live in FL and I wanted to start composting with worms.I bought 48 Red Wigglers that were originally stored in a cooler (by the seller). After 3 days, it seems like my worms have grown legs and ran off because I dont even see there dead bodies in my compost bin. The last batch of worms I bought came dead (despite what the seller told me) and they stayed that way. But even afterwards, their dead bodies were still in my bin. Am I doing something wrong?