I believe the episode listing for Jake and the Neverland Pirates S03 is potentially inaccurate, I believe the correct episode listing for S03 is as follows;

• S03E01 Treasure of the Pirate Mummy's Tomb
• S03E02 Mystery of the Missing Treasure!
  
• S03E03 Invisible Jake
  
• S03E04 Who's a Pretty Bird?
  
• S03E05 Captain Gizmo
  
• S03E06 Jake's Pirate Swap Meet
• S03E07 Pirate Genie Tales
  
• S03E08 Cubby's Crabby Crusade
  
• S03E09 The Never Sands of Time
• S03E10 Trouble on the High Sneeze
  
• S03E11 Pirate Sitting Pirates
  
• S03E12 Smee-erella!
  
• S03E13 The Never Land Coconut Cook-Off
• S03E14 The Lost and Found Treasure
• S03E15 Hideout... It's Hook! (you have this listed as episode 17)
• S03E16 Tick Tock Trap
• S03E17 Play It Again, Cubby! (you have this listed as episode 18)
• S03E18 Trading Treasures (you have this listed as episode 19)
• S03E19 The Singing Stones (you have this listed as episode 20)
• S03E20 The Mermaid Queen's Voice (you have this listed as episode 21)
• S03E21 Where's Mama Hook? (you have this listed as episode 22)
• S03E22 Captain Hook's New Hobby (you have this listed as episode 23)
• S03E23 Bucky's Treasure Hunt (you have this listed as episode 24)
• S03E24 Cubby's Tall Tale (you have this listed as episode 25)
• S03E25 Hook's Treasure Nap (you have this listed as episode 26)
• S03E26 Princess Power (you have this listed as episode 27)
• S03E27 Nanny Nell (you have this listed as episode 28)
• S03E28 Izzy and the Sea-Unicorn (you have this listed as episode 29)
• S03E29 Hook the Genie (you have this listed as episode 30)
• S03E30 A Royal Misunderstanding (you have this listed as episode 31)
• S03E31 Pirate Pogo (you have this listed as episode 32)
• S03E32 The Sneaky Snook-Off (you have this listed as episode 33)
• S03E33 Sleeping Mermaid (you have this listed as episode 34)
• S03E34 Jake's Mega-Mecha Sword (you have this listed as episode 15)
• S03E35 Pirate Ghost Story
  
• S03E36 Queen Izzy-bella
  
• S03E37 Jake the Wolf
  
• S03E38 Witch Hook
  
• S03E39 Battle for the Book!
  
• S03E40 Mer-Matey Ahoy!
• S03E41 Pirate Pinball
  
• S03E42 Shiver Jack
• S03E43 Treasure Tunnel Trouble
• S03E44 Grandpa Bones
  
• S03E45 The Arctic Pearl
  
• S03E46 Captain Scrooge
  
• S03E47 Jake's Awesome Surprise
• S03E48 Aye, Aye Capn-Capn
• S03E49 Captain Frost (you have this listed as episode 51)**
• S03E50 The Legendary Snow-Foot (you have this listed as episode 52)
• S03E51 Look Out... Never-Sharks! (you have this listed as episode 53)
• S03E52 The Monkey Pirate King (you have this listed as episode 54)
• S03E53 Stowaway Ghosts (you have this listed as episode 49)
• S03E54 Happy 1,000th Birthday (you have this listed as episode 50)
• S03E55 Flight of the Feathers
  
• S03E56 Captain Hookity Hook
  
• S03E57 Dread the Evil Genie
  
• S03E58 Sandblast
  
• S03E59 Tiki Maskerade Mystery
  
• S03E60 The Tale of Ratsputin
  
• S03E61 Captain Buzzard to the Rescue
• S03E62 Croctastrophy!
  
• S03E63 The Great Never Sea Conquest!