It works for me.
Just below the last post in a thread, you'll see B I TT 3 verticle dots etc and a final 3 vertical dots. To the left of those there is a rectangle with the sun (?) and a mountain (?). Click that. You'll see Drop Image and below that 'or click here"). Do whichever you are most comfortable with. I like "or click here", which brings to a link to the left of the window that will allow you to pick where you will get the picture.