Probably a configuration issue.
You should have modified the "permalink slug" value to "events" under the "Advanced" settings tab. Kindly change it to "event".
Also, our plugin adds few pages dynamically in your website those are required for the logical workflow of the plugin. You should have deleted those pages or modified our pages settings tab. Kindly revert your changes to get this work. If possible, kindly email us your WordPress admin access details to This email address is being protected from spambots. You need JavaScript enabled to view it.. So, we can configure this right on our own.