Some Web Journal Disappeared: "This project is not available"

After years of using iPhoto for creating Web journals, I a cannot access some of them. The journals are listed as being in the cloud but when I click to see the pictures inside only get the message: "This project is not available". The same happens if I follow the link from email that I sent to sayer the journal with friends. I have never deleted any of them and yes, they are in the list as existing. At the same time, some other web journals are also in the list and available.