So I have been having trouble posting pictures also ,
The problem seems to be with the file manager taking a long time to respond.
I had tried to post a picture, and it did not show up in the post , or in the file manager. Tried it three times, NOTHING!
then I looked again bout an Hour later , and some of the pictures i tried to download were there but not all of them /
Then I tried again downloading the picture below, that would not download before, and this time It showed up in the file manager but not in my post. So from inside the file manager , I selected it and them chose the "insert inline" option and as you can see it worked.
So I think the problem might be a lag time in communication of my device with the file manager.
PS: this used to be a very big picture, I simply zoomed 50% in on my browser to make the page where the picture was small and then used the "snipping Tool" to take a" page shot"of the smaller picture and then saved it as a Jpeg.