Code Name Verity, which Series Number

[Christy]

Which Series number should this book be - #1 or #2?

On the Author page, it shows as as #1:
https://www.goodreads.com/author/show...

But on the Book page and Series page, it shows as #2:
https://www.goodreads.com/book/show/1...

https://www.goodreads.com/series/9441...

Thanks for advice.

[Scott]

In the series description it says that it was the recommended reading order by the author. However, I do not believe we should be using this, and have reordered them by publication date.

[Liralen]

I think #2, per the series note (Book order is the one suggested in the author's website, not publication date or fictional chronology) and correspondingly the author's website: https://elizabethwein.com/book_series...

It looks like the book titles in that set of books haven't been updated with series info.