Error can’t parse project – Home Design 3D Outdoor Garden Review

I don’t know what it means. But outdoor home design 3D won’t let me open any of my already created projects from home design 3D. Also when I open up Dropbox in this app all that shows up is a blank box. I know I exported my projects to Dropbox.
Review by redbloodedvalorflame on Home Design 3D Outdoor Garden.