Had the same problem on my ipad mini4 after flight this afternoon when I trying to view flight log. A buddy of mine did to on Saturday on his tabet as well. He told me sync to save then delete the app..then download again from the appstore.Today I was flying my MP and the dji go 4 application quit working, i started it again worked for a moment and quit working again. does anyone has an idea of what could be causing that?