In attaching a picture after you type a message simply go down to the "Attach File" and Browse... to find your file. Select the file you want to attach and it should show up in the box. If you don't "Browse" and select you would have to correctly fill in the full file path on a Windows computer. Then click on "Submit Reply". I find if I select "Preview Reply" that I will lose the picture. Let's see if I am right...
2015 Sprinter Class B Camper Van
(Former 1971 vintage Airstream Owner)