Not posting to blog since update

Since the recent Postie update (worked well a month ago), the posts are not going to the blog page. I do receive a confirmation email that shows the post was made, however, it is being placed onto a newly created page.

Instead of being posted to https://www.example.com/newsblog/here_is_your_post/
The post is creating https://www.example.com/here_is_your_post/ which is viewable.

Also, although the post is creating a new page to display on, it is not showing in the MariaDB table ‘_posts’.

Tests and error log shows all checks passed.

Any help as to what is going on and how to troubleshoot is much appreciated.
Thank you in advance.