Take an object that sits about an inch over the main platform of the Portal of Power (referred to hereafter as "PoP") and place the figure right on top of it when the on-screen prompt asks for the figure.
I use a roll of electrical tape for all of my "defective" figures that cannot be read by simply placing them on the platform of the PoP.
It is somewhat annoying to remove the roll sometimes, but at least all of my figures work with no problems.
See if it works
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