Display error on iPhone7 Prevents Map Editing

I am using WordPress 4.8 running Travelify theme. I am updating my blog using my iPhone 7 (iOS 10.3.2). I have previously set up a Travel Schedule map on my PC at home, and sometimes need to edit or modify a location or date. When I go to manage my map, the graphics are overlapping and prevent me from selecting the “Edit location” tab at the top. When I hold my phone in portrait mode, the Current Map drop down menu blocks access to both the “Add location” and “Edit location” tab. When I turn the phone to landscape mode, the title “Current Map” for the drop down menus blocks both tabs. Since the default is “Add location,” this is all that I can do.

To make matters worse, if I try to move a location by dragging it up or down in the list, the only thing it will do is move down – and often very fast and uncontrollably. This is a second issue, but possibly related to using the add and edit location features of Nomad Map with an iPhone 7.