2018-06-16, 00:14:43
That's a very non-standard site. (one-page, ajax...)
If everything else is working, I suspect that the original developer made his own customized version of the plugin and his/her changes were overwritten when upgrading it.
I suggest you restore the plugin files (news_manager.php and the whole news_manager folder) from a backup.
If everything else is working, I suspect that the original developer made his own customized version of the plugin and his/her changes were overwritten when upgrading it.
I suggest you restore the plugin files (news_manager.php and the whole news_manager folder) from a backup.