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I am having "Delivering a Gig late can result in 10% lower buyer activity" on my order page

I’ve completed 2 orders recently. I delivered two project before deadline.
My first order had time period of 3 days, I delivered that within 1 day and 6 hour.
My second order (custom) had period of 5 days. I made delivery within 4 days.
But now on my order page I have this:
“Oh dear!
Delivering a Gig late can result in 10% lower buyer activity”
What does it mean?