Setting up Unpaid Item Assistant:
Go to My eBay > Account > Site Preferences.
Click Show to the right of Unpaid Item Assistant, and then click Edit .
Select Yes – I want Unpaid Item Assistant to open and close cases on my behalf.
In the drop-down menu, select the number of days you want Unpaid Item Assistant to wait before opening a case. If you don't see the lower settings (for example, 2 days), update your combined payments preference.
Select the Real-time option if you want to receive an email when the Unpaid Item Assistant opens or closes a case.
Under Automatically relist the item when the case is closed with no payment, select Yes or No.
Click Save