Am I missing something?

You are probably missing the text in the information next to it telling you that it has been referred for manual review for security reasons. That's no cause to panic unless you have violated the ToS.
Where would that text be?
INSTANT
----------
wallet address | amount
There's no other text that I see.
Thanks! No problem if that's what it is, gotta stop launderers after all.

My slow withdrawal completed already.