I don't use a surname, implying I just have my first name in all my legal documents, and I intend to keep it this way. I got my first accepted submission in a conference lately where I added my name in this format: (eg.) "Meredith - ". Now my name is appearing as "-" in the list of contributors on the submission website. I don't wish to add a surname, how do I deal with this? This work will be added to ACM Digital Library where they do add full names as far as I know.

(PS: I want to be cited with my first name only in my future work as well.)