MINECRAFT DUCKTALES MARKETPLACE PACK BUG

I recently bought MINECRAFT DUCKTALES pack in the marketplace , I was very exited to try it out, but then... There is a quest to defeat the money shark but it doesn't spawn! I then spawned it with the spawn egg and it was achieved but then... there is another quest, "go to the foyer" I went there (even watched videos about it) but it didn't work! Now I am stuck and can't complete the map. Please fix this!!! Thank you for your time!