This plugin has/had/whatever the potential to be one of the best review plugins out there. However, I can only warn others to stay simply due to the lack of support. There is no. I opened a ticket. It took two weeks to get a response and that only came after creating a second ticket to question the lack of response.
I opened another support ticket over three weeks ago. It's likely a simple yes or no. I'm still waiting on a response.
And it isn't like no one is monitoring the support page. You see responses for their themes, but not this plugin. It's unfortunate. But I warn you to look elsewhere for a similar plugin (it'll be tough) unless you're not worried about support for the plugin.