RPS Image Gallery does not have a settings page since it simply overrides the default gallery shortcode. There are a plethora of additional shortcode attributes which are enumerated in the FAQ. We do have plans to add settings in a future release to make it easier for users to define defaults for all galleries.
Regarding the compatibility with WordPress 3.7.1, our testing indicates that there is no issue with the plugin, though our testing environment likely differs from your specific installation. If you would perhaps consider opening a support thread and providing a link to a gallery page on your site, we could assist you with troubleshooting.
Thanks in advance for your patience and understanding.
One more thing that might be helpful in the future. You can submit a vote regarding compatibility with a specific version of WordPress without the necessity of writing a review. It is important for all of us to make certain reviews, support issues and compatibility reporting are submitted using the proper tools so that we can help you and you can help others.