Expensive useless bought seed

Not all seeds make it, its no one fault it was a dud. Shit happens and given the information at the time giving it time was the best option. pop anther bean and move on, if it looks shrived up on the stalk this might have been something called dampening off. It does not look that way from the pics but pictures can be misleading. I always use a assortment of microbes for the medium when starting seeds to help combat the shity bad ones. Good Luck!