How to change Images in your Email Template
To change images in the email templates, go to 'Settings' from the side menu. Click on Documents and then click on Image Assets to expand the tab.
Click the 3 dots button in the 'Actions' column and click on 'Replace'.
Click on ‘Browse’ to choose the image that you want to display in your email template. Once you select the image, click on ‘Save’ to update the changes.
Verify whether the image you have uploaded is properly updated.