Hello,
We deeply apologize for the unexpected delay in response.
We didn’t make any further changes to your website. Most probably, Google recrawled your sitemap and was able to fetch it without any issues.
Regarding the Discovered URLs 0 you see in Google Search Console, it just means that the URLs in the sitemap were already found by Googlebot by other means, instead of via the sitemap.
For example, Googlebot may have found the URLs from internal links or possibly from links on another site. It mostly happens when you have good internal linking or use the Instant Indexing plugin.
Here’s a link you can check for more information:
https://rankmath.com/kb/zero-discovered-urls-through-sitemap/
Hope that helps and please don’t hesitate to let us know if you have any other questions.
Thank you.