I'm using Firefox plus a collection of scanners and blockers and I don't get the paper clip icon to work. Plus I'm using an older digital camera and not a smart phone.
So just like before, I click on the "go advanced" button. In the middle of the list of options I have one for attachments, it is subtle and blends in with the others!
From there I get my upload screen but for me it still defaults to the old vertical layout, I have to resize the window to a horizontal layout to actually have the Upload button to click. One of the options that comes up is your downloads folder.
Before I post I have already reduced my picture's file size using the defaults provided here:
https://www.reduceimages.com/
It is a free site (no affiliation) that does not set off my virus scanners and doesn't do much but does this excellently! Once I reduce the image and download it from there it is ready to be uploaded here.