24 hours slow though?
I have the same problem as you.
I sent .28 bitcoins from Cryptopia to Korbit...
After 18 hours still nothing.
I think the problem is cryptopia. I never had any kind of problems with other exchanges sending and depositing coins.
Only Cryptopia in multiple occasions which they've fixed in the past rather quickly or been resolved less than a day. Their customer support has been lacking lately.
There's really nothing you can do except pull up a support ticket @ cryptopia and wait it out or you can pay hundreds of $$$ for a confirmation.
I'm still waiting for my support ticket I filed 3 days ago.