Hey @juanforce,
I checked the question you asked in Google’s Community Support. Firstly, I’d suggest asking again why Google is fetching the Sitemaps that don’t exist on your website. You can mention that you’ve already cleared the caches and even after removing the Sitemaps, they’re getting added again. Although this still might resort to caching, I’d suggest asking this again.
Regarding RSS Sitemaps, these Sitemaps get crawled more frequently by Google and thus we include it in the Robots.txt file so that Google can find it easily. You can read more about this Sitemap here –
https://aioseo.com/docs/how-to-create-an-rss-sitemap/
Since you already tested other SEO plugins and even submitted manually created Sitemaps, it can safely be assumed that the RSS Sitemap link added to your Robots.txt isn’t causing any issues.
However, you can disable the RSS Sitemap from All in One SEO > Sitemaps > RSS Sitemap tab if you wish – This would also remove the RSS Sitemap link from the Robots.txt file.
As for Sitemap Indexes, we also recommend enabling Sitemap indexes only when you have over 1000+ URLs on your website. You can disable the Enable Sitemap Indexes toggle from All in One SEO > Sitemaps to disable Sitemap indexes –
https://a.supportally.com/i/i9Vz5l
Regarding the Couldn’t Fetch message, the information shared in Google’s thread is correct and the Couldn’t Fetch error doesn’t mean that there’s an issue with the Sitemap. As I confirmed in one of my previous replies, we’re generating a completely valid Sitemap.
I searched your website and Google is regularly indexing the Content on your website. Here’s a screencast covering multiple URLs of your website that Google indexed in the last 30 days –
https://a.supportally.com/v/HalNBP
Google should update the Sitemap status once it crawls the Sitemap again. However, since the URLs on your website are getting indexed correctly, you can safely ignore the Couldn’t fetch message – this is also confirmed in your Google Community Support thread.
Please let me know if you have any questions.
Thanks!