Continuity mistake: When Chloe, Nate, and Sully rest and talk about wine, Sully holds the glass differently between shots. One shot it's by the stem another by the foot/base.
Continuity mistake: In the fight scene on the boat in the air - the cabin door is smashed in by Sully and "bad guy", but a shot later, Nate slams into the reappeared cabin door which is not smashed. (01:33:51)
Continuity mistake: When Sam leaves Nate at the orphanage, there's an orange lamp to the right side of the window emitting light on Sam's face. As it's on the right of Sam, the right side of his face should be lit orange; however, in the cut to the close-up, the orange light is on the left of Sam's face. This is likely due to the editor flipping the shot in post.
Continuity mistake: When Nathan gets out of the trunk of the red car in the cargo plane he is not wearing his ring necklace for a couple of scenes. Then it appears.
Continuity mistake: When Nathan exits the manhole in Barcelona his fringe changes style depending on the shot.
Continuity mistake: When Nathan prepares the Negroni the mixing glass is either parallel to the napkin or to the left of it. This changes back and forth.
Continuity mistake: When Nathan arrives late to work he extends his right arm to take his jacket off and then lowers it. From the opposite angle his arm is extended, and he lowers it again.
Answer: Jo and her mercenaries were at the wrong island, It's when they saw Drake go past them in a speed boat, and not to the island they were on, that's when they realised they had been tricked.