Adding 4 books to a series

[S.R.]

Just realized that somehow four of my books weren't added into the series. Could you add them? Also, how do I stop this from happening in the future? Thanks!

Series: Refurbished Fairy Tales

Book 5 https://www.goodreads.com/book/show/4...
Book 6 https://www.goodreads.com/book/show/4...
Book 7 https://www.goodreads.com/book/show/5...
Book 8 https://www.goodreads.com/book/show/5...

[Peter]

Added. Only librarians can add books to series, so just please request here anytime needed.

[S.R.]

Peter wrote: "Added. Only librarians can add books to series, so just please request here anytime needed."

Okay. Thank you.