To change your Publishwide sync settings:
Step 1: Open your Publishwide Sync App (Can't find your Publishwide Sync App?)
Step 2: Click on the Home icon in the lower right hand corner:
Step 3: Click on the Settings button that appears:
Step 4: Click on the Platforms button:
Step 5: You can now change which platform and marketplaces you want the app to sync:
Step 6: Click Next to confirm your selections.
NOTE: If you arrived on the Sync Settings page by accident, you can always go by clicking on the Home icon, choose Settings, and clicking on the Back button.