Unable to assign article to custom member type

Hi there.

I have used the Member plugin to create a custom writer class. I wanted to disable publishing (so I can review the post).But enable editing of published post.

I tested with a user and this seemed to work.

However when I want to change the author on an article these users do NOT show up on the list of available authors.

I am talking about Quick edit in the post overview (I do not know of another way to edit author).

https://www.ads-software.com/plugins/members/