DailyPay

I've been on AW for a few years, and only just recently added dailypay. I got the confirmation email, and my AW profile has been added to the group.

On Monday 3rd June, I received around £50 during the daytime. I was expecting this to be paid at midnight, but it's 1am now (4th June) and it's still not gone through..

Does anybody have any ideas why?

Do you mean you made £50 on Adultwork during the 3rd? If so you wouldn't get paid for it at midnight! You'd be paid sometime between 11am and 3pm on the 4th.