Introduction: Your store's settings determine the basis for the store fields such as Store Name, Logo, Email Address, Phone Number, etc. To edit these fields, follow the steps below.
Step-by-step details
1. Click Settings (the Wrench icon in the upper right).
2. Select Selling Channels and then Store Setup from the left-hand sidebar. 
3. Click Edit under the Actions section.
4. Edit the Store Information that will populate in your emails.
5. Follow these steps for each active Selling Channel.
NOTE: The Store Logo Size will vary based on the original image uploaded. If your logo size isn't suitable, adjust the dimensions using image editing software, and re-upload the logo. The recommended logo size is approximately 300px by 80px.