not sure if the edit and duplicate items buttons are supposed to be visible to all viewers of the store item. Clicking either brings you to an "oops" page.
--------------------------------
Your browser/os information:
Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_2 like Mac OS X) AppleWebKit/603.2.4 (KHTML, like Gecko) Version/10.0 Mobile/14F89 Safari/602.1 (this will help us make sense of your bug report)