It can take Ebay a while to 'catch up' even when your courier shows as delivered.
You will be paid 48 hours after tracking shows delivery or when the buyer leaves positive feedback.
If 48 hours pass and you don't get paid, you can contact Ebay Customer Services and ask them to check the tracking and release your payment.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)