I also have this problem. I added the guest poster into the WP backend as an “Author” user and filled in all the ap_name fields, etc. but it still shows as the default site author name.
Here is an example of a guest post (by me) being presented as authored by the site host (Shelley Z):
https://divinesigns.ca/a-brief-chat-with-jesus-part-ii-guest-post/
However, the other part of this post (Part I) correctly displays my name as author: https://divinesigns.ca/a-brief-chat-with-jesus-part-i-suzanne-paschall/
I can’t see any difference in the settings in any WordPress for these two posts, or the custom fields I set up for Anon Press.
The other issue I have with this plugin is how to allow for the spam filter checkbox to appear on the guest post comment form. Shield is my client’s spam filter plugin.
Please help as soon as possible! Thank you,
Suzanne