I did not say that you copied another user's picture. What I meant was that you upload your own image first on another Hive frontend (such as #PeakD, #Ecency, or #HiveBlog), then copy the resulting image link which you finally post on your D.Buzz post before publishing. I'm sorry for the misunderstanding.
RE: I don’t really know why I can’t post any updated pictures that I saved ...