PayPal is manually inspecting the payment. You should automatically get upgraded once they are done.
Here's the exact message from PayPal:
Held Date : March 2, 2019
Release Date : March 3, 2019
We’re taking a closer look at this payment. It’s required for some payments and normally takes up to 3 business days. Don’t ship until we tell you it’s ok.
By the way, I want to confirm one more point.
This is PayPal's receipt. It takes three working days to confirm, doesn't it?
It's not my purchasing problem, is it right? Can you confirm that my purchasing agent has paid you?