Edit Business Information
To edit the information published to Facebook and Google, log in to your Merchant Center and navigate to "Settings," then "Edit Business Settings." You can then make changes to any of the available fields. When you are done, click "Save Changes" in the top right-hand corner. Your information should be updated across Facebook and Google within the next few business days.
To add photos to Google or Facebook, email the photos to firstname.lastname@example.org. You can also specify if you want an image to be your updated company logo, profile picture, cover photo, or a general image.
Signpost recommends that your business logo should always be your profile picture on social media to build consistent awareness and recognition for your business.