Lyman are great to deal with.
Error 40 is something wrong with the load scale.
I sent mine back and they said I had a heap of powder under it preventing it zeroing.
Your will not have that issue being new.
Take the silver plate off carefully by lifting it.
See if the base is located central and not jammed asque as can happen in transit.
It looks like a elongated "D"
If it still does not work you will have to send it back
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