Plot hole: WW mentions that "As Darkseid waged war on Earth, he found a secret there", that being the Anti-life equation. But later on it turns out that after being defeated, planet Earth is so "anonymous among a trillion worlds" that he never manages to find it again and destroys another 100,000 worlds (his words!) to look for it again. That would mean that they lack any sort of navigation, and it's hardly possible anyway that the planet would be "anonymous" when it contains what Darkseid wants the most.
Plot hole: The heroes find Steppenwolf's base thanks to Cyborg's dad, who superheated the core of a Mother Box so it shows up on a thermal scanner. But the box itself wasn't emitting any heat on the outside, and a satellite can't magically infer the internal heat of an object if it's not conveyed to the surface. If Wayne has such precise satellite sensors, it would also spot a nuclear plant suddenly drained from radiation, and the intense energy (and heat) caused by Steppenwolf's activities.