Of course you can! Once you enter your account information, even if your campaign has already ended, you will start the disbursement process. We'll email you within 15 business days of your adding the bank account information, when your excess / remaining funds are sent.

First, make sure that 15 business days have passed, not just 15 days. Then make sure that you've entered your bank account information. Go to the dashboard of your campaign set up and to check your bank / Paypal information.