Log in to your Poper.ai account and access the Dashboard by clicking on the 'Dashboard' icon, usually located in the sidebar on the left-hand side of your screen.

From your Dashboard, find and click on the 'Websites' icon, which will take you to a list of all the domains you've added to your Poper.ai account.

Locate the domain you wish to remove. Each domain should be listed with an option or an icon to interact with it. Look for the 'Remove' or 'Delete' button or icon, which is often represented by a trash can.

After clicking the 'Remove' or 'Delete' option, a confirmation prompt will likely appear, asking you to confirm the removal of the domain. Carefully read the prompt, as this action is usually irreversible. If you are certain you want to proceed, confirm the action by clicking 'Delete' or 'Remove'.

Once confirmed, the domain will be removed from your Poper.ai account, along with any associated popups. You should no longer see the domain listed in your 'Websites' section.

Keep in mind that removing a domain is permanent and can't be undone. All popups associated with the domain will also be deleted.