I'm currently using a free plugin that sends a Newsletter.
The plugin added a section "Newsletter" in my admin panel, and when I create a Newsletter, it is inserted in "prefix_post" table with the column "post_type = newsletter"
In addition to this, the plugin adds a relationship in
adding 2 more values in the "meta_key" column
The plugin worked fine, but when I installed Better WP Security, I changed the table prefix names, and the relationship in
"prefis__postmeta" is not created anymore for new posts.
The question is: where can I find the php code about Newsletter creation? I suppose it is not inside the plugin folder... Then, where is it?
I think it is very easy to fix this bug once I the sql DDL for relationship creation is found...