It seems that the plugin is currently very limited.
1. By default it only adds support for feedback prompt on pages and no other post types.
2. Only logged in users can send feedback.
Hopefully this will be changed in upcoming version unregistered users can send feedback too. It will be nice if there was a configuration page to select post types and decide whether or not to accept anonymous feedback.
Seems like more post types can be added using a filter. I am changing my rating accordingly.
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