We apologize for the instability of composr.app and appreciate your patience. We are working on the statistics addon and trying to find an optimal way to store and render data. Unfortunately, we have yet to find a solution that can handle the traffic (and therefore, tens of millions of statistical records) of composr.app. We're working hard on one.
I'm going to keep this open, but can't you just add an author record that is a combined name? That's a workaround, but I also think an industry standard for documenting authorship, e.g.:
https://www.amazon.com/s?i=stripbooks&rh=p_27%3AIan+Jackson%2C+Steve+%26+Livingstone&s=relevancerank&text=Ian+Jackson%2C+Steve+%26+Livingstone&ref=dp_byline_sr_book_1
Actually my example isn't good because Amazon is actually storing the authors in separate records, lol. But I am imagining a million book or music databases out there that use a single field.
https://www.amazon.com/s?i=stripbooks&rh=p_27%3AIan+Jackson%2C+Steve+%26+Livingstone&s=relevancerank&text=Ian+Jackson%2C+Steve+%26+Livingstone&ref=dp_byline_sr_book_1