Plot hole: After Reverse Flash saves Lois Lane and kills all the Amazons that were attacking her, he disappears, just before a group of resistance fighters shows up. They know that they didn't take out any of the Amazons, it's obvious that Lois didn't kill them, yet the resistance members show no concern as to who was responsible. The war involves three separate groups, the resistance, the Amazons and the Atlanteans, each of whom is equally hostile to the other two. As such, the resistance cannot assume that whoever killed the Amazons must be an ally and let their guard down, as it could easily have been an Atlantean force, who would make no distinction between the Amazons and the resistance and would attack them on sight. An experienced resistance team would not be so casual about the situation. (00:40:50)
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Justice League: The Flashpoint Paradox (2013)
1 plot hole - chronological order
Directed by: Jay Oliva
Starring: Ron Perlman, Cary Elwes, C. Thomas Howell, Nathan Fillion, Michael B. Jordan, Kevin McKidd, Justin Chambers, Vanessa Marshall, Jennifer Hale
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Continuity mistake: After Batman shoots Reverse Flash through the head, Flash rushes over to Batman and catches him before he falls over from his wounds. As Flash is lying him down slowly, there is no blood on Batman's face. It then cuts to a close up as Batman reaches up to pull off his mask and there is suddenly blood on his lips and chin. (01:12:20)
The Flash: It's me you want, Thawne. You don't have to kill thousands of innocents to bring me down.
Eobard Thawne: No. No, I don't. But I choose to, knowing it will make your last moments pure agony. Goodbye.
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Answer: Flash couldn't travel through time later in the movie not because Zoom was alive but because Zoom was also tapping into the Speed Force, preventing Flash from gathering enough of the Speed Force to break the Time Barrier. When Flash originally went back in time it's likely because Zoom was in custody, therefore not tapping into the Speed Force at that time.