To delete a user from your account, follow these steps:
Go to your Kanpla profile and click on the profile icon.
Next to the user you want to delete, click the pencil icon.
Under Other options, click on Delete Your Child.
Follow the steps to complete the process, and the user will be deleted from your account.
Please note that deleting a user is different from deleting your entire account. If you wish to delete your account entirely, please refer to this article: How do I delete my account.