Gary,
click “attach files” below
take photo or select file
Select a place to put the photo in your post
click the grey “
+ Full” box in the top left of your thumbnail and…
and you’ll get this
you should be able to go back and edit your earlier posts
If you have attached more than one photo, you can also click the “insert multiple” below the photos and it will ask “Select All” and “Full”
atb
Simon