In the current version, the access to the page operation is restricted to administration users only
Go to your Confluence administration area > Logging & Profiling and add "com.hascode" and the desired log level to the entries. Having done this take a look at your log files.
It might take awhile to see the results because the plugin uses the internal Lucene field cache not to slow down the performance. If you need to see the changed immediatly, rebuild your index.