I have been denied a run for "duplicate" and I do not understand why if it meets all the rules of the run

The link is this and is in the section Dr. Kahl's Robot: Highest Grade - Co-op, Simple, Legacy (Sorry for my english)

Hello, you submitted the same run twice, so the first run got verified and is on the leaderboards but the second run got rejected because the first one got verified already :)

Ah, okey ty

Why the run was postponed

That run isn't finished, for simple, the timing ends when you king dice stops you.