Below, is the way I do it on my iPhone. There might be other way?
Click on “Click here to upload a photo”.
Click on “Drop files here or click to upload“.
You will see a pop-up to select photos from album, or take a photo. Click which one you want.
From your camera or album, check the photos you want. at the bottom left, click on options and a window pops up with different size pictures. Pictures need to be 5 MB or less.
If your picture is accepted, you will see a white checkmark. Click on I’m finished…
