I have realized that after I activated this plugin, all my renamed posts now return 404 error instead of smooth redirection to a new URL. Normally (without this plugin) it internally redirects all old URL's to new ones. e.g.:
http://example.com/my-post gets later new article name and new url http://example.com/my-renamed-post. Without this plugin the WordPress internally redirects all users from the old URL to a new one. As soon as I activated this plugin all the internal redirections stopped to work.
Looks that the plugin takes higher preference than the internal one. Is there any chance to keep the internal redirection with the higher preference and then use the Redirection Plugin rules?