Redirect not getting deleted

I am relatively new to WP. I am using your plugin to redirect the link for a post to a page. I chose the permanent redirect option and redirected a link. Tested and it worked. After the test i deleted the link from Settings > Link to URL on the dashboard, but the redirect is still working. I was testing it! How do i get rid of the redirect now?

https://www.ads-software.com/plugins/link-to-url-post/