How to change the picture of community

I used to change the picture three years ago, the picture is now pitdating, I don't think I can change the picture on iPhone neithe iPad, it's all right though, I have better pictures like LinkedIn showing. My LinkedIn pictures also 90 degree rotating, funny profile sites it used to be up loading well by April 2016, I suspect strange work is going on but very unreasonably, I can say neglect to desfunctioning the great features of Apple iOS and LinkedIn but by sone occupy type workers, sad.