I was using this plugin on two sites and noticed for both that the sitemap did not show up on Google Search Console. Instead, I got an error that the sitemap was unavailable/in html format. This plugin redirects to front page and therefore, the sitemap is hidden by this plugin.
This means that only the front page and not the rest of the site is therefore indexed by Google and visible on search. No other pages or posts will be visible on a Google search. If this works for you, fine, but it is a major flaw for sites that are bigger than a landing page.
By deactivating this plugin, the sitemap was visible again and indexable, so not only my front page but all of my pages and post are indexed and found on Google.
I really like the simplicity of this plugin and hope this redirection of the sitemap can be fixed. Thanks.