How do I add pictures to store item? is the source of the picture a local file name, or a URL that I have to have it posted somewhere out on the web?
Can you send screenshot, I do not see the Manage Preview Photos
Thank you for report.
You can go to store->products->manage products, there is a section - manage preview photos. Click on it and there you can add pictures you like.
Please contact me if you have any further support.