Sorry I speak very low english.
I have the website: tetoonline.com/pt/
My XML link is: http://www.tetoonline.com/pt/sitemap_index.xml
I put this on webmaster tools but say:
Your Sitemap does not appear to be in a supported format. Please ensure it meets our Sitemap guidelines and resubmit.
What is the solution?
NOTE: My website is in a folder: /pt/
I dont use cache system.