Thanks again Cory. All I know is that as soon as I got an iphone, the option of sharing photos started including icloud on the imac and would no longer share via mail. I did not know that there was a difference between iCloud and iCloud photos. I don't believe that I ever signed up for an icloud account, certainly not with an email associated, but will read articles and try to figure it out. According to user advice on iphone, memory is being used to store photos in icloud. So maybe I did agree to that, but have no record and have disabled icloud in all apps on phone that want to use it except photos. I am going to mark this question as solved because I just need to figure this out. As I wrote, the guy at Apple said that I could no longer share because my OS is too old, which got me on the other path of getting a later OS on a newer computer. Thanks for articles.
