Hi,
I am using SEO to generate a sitemap (can be found here - https://www.roburir.com/articles/sitemap_index.xml)
When I add this to webmaster I get the error:
Your Sitemap appears to be an HTML page. Please use a supported sitemap format instead.
Reading around I see that this is probably due to W3 total cache. I have done as suggested and deleted W3 plugin, however the error is still showing. What else can I do?