We just got a new to us 2015 Limited that did not have any front license plate bracket, so I just went through the process of mounting one on the bumper. From my inspection of your photos, I believe the new bracket is not the correct OEM one. This is the Part # that fits ours: FL1Z-17A385-AA. You can see it online here:
https://www.fordpartsgiant.com/part...iator_grille_and_front_bumper.html?pnc=17A385
The giveaway is the OEM has two tabs at the top to hold the plate, and the plate is fastened to the bracket with two screws in the bottom only. The pictures of your new one show the plate held by 4 screws. The bumper itself comes pre-drilled with three holes that match the ones in the bracket, and you use some plastic push pins to secure the bracket to the bumper.
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