Hello @NoushinH8. You can update the image on the confirmation page by going to Sign Up Forms > Basic Landing Pages. Under "Update Profile", you'll click Actions > Edit. From there, go to Form Appearance and here you can switch out the logo. Here is a link to our Knowledge Base explaining how to update the Update Profile/Unsubscribe confirmation page. These steps say they are for the Update Profile form but they will also be reflected on the Unsubscribe page as well.
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