I know I have photos in my stable bio right now, but I forgot how to add them. I know we have to go to "manage about stable and bio", I'm talking about physically inserting the image. I have a photo saved to my iPad that I want to paste into my stable bio, but can't. When I click nex to a photo that's already in my bio and hit paste, it pasted, but then I click "save" and it doesn't. I can click "insert image", but that requires a source and copying from my saved photos doesn't provide anything to type into that box

Upload it to an image hosting site such as postimg and copy the direct link. Then go to editing your bio, click insert>image and paste that link in the top line of the pop up window.