Thanks for following up, @mfragasa23 . I’m glad to hear that you’ve managed to remove the extra sitemap files.
If you are no longer seeing the “Couldn’t fetch” error message, then it’s safe to say that you have properly submitted your sitemap using the URL prefix method, which requires you to enter the full URL with the SSL certificate (https). While the domain method can be used, this does involve editing your domain’s DNS settings and at this point, doing so won’t be necessary.
Thanks again for the update. It sounds like you’re all set!