How are you germinating them? I put mine in a wet paper towel inside an open ziplok and they crack that way within a day for me, then into the soil. If for some reason they don't, you can take some fine grit sandpaper and skuff up the shell a bit, kind of weakening it so the root can pop through. The cotyledons often die (the round leaves the plant starts with), it's no big deal as long as it stays with those and doesn't spread. Also the roots like depth, looks like you're using styrofoam bowls? which don't have much room to grow downward. This can make it a pain to transplant as well.