Ulule performs an initial validation when a project is proposed to filter out questionable projects.
Afterwards, the project owner is solely responsible for the project and the only person who can answer questions about it (Ulule's role is to facilitate funding and promotion of projects).
However, it is important that you be aware from the start that there is “risk” involved with any project, from the idea stage through to pre-production: some projects have to be postponed, while others simply (and unfortunately) have to be abandoned.
You can always contact project owners to request an explanation if none has been provided directly through the project page. Either by clicking on the link “Send a message” of the Creator section in the right column or by leaving a comment in the “Comments” tab (3rd tab).