You've done the work and are now ready to get that $$! Here is some info to help you understand when you will get your payout.
The customer has up to 24 hours to complete the payment after you mark I'm Done and request payment. So if you finish a task and hit the prompts at 5:30 p.m. on Tuesday, the customer will have until 5:30 p.m. on Wednesday to complete the payment.