Feedburner Problem

I have just shifted from blogger to wordpress. Everything is fine except the feeds. I wanted to configure them to work with feedbuner. But its giving some errors.

My blog url is https://dt.yogtec.com/ & my original feed url is https://dt.yogtec.com/?feed=rss2 (which is working)

While entering the original feed links at feedbuner i got this error.

The URL you entered does not appear to be a valid feed. We encountered the following problem: Error on line 50: The string “–” is not permitted within comments.

I thought that problem was with my template. But in order to confirm it i got my site to WordPress Default theme but still the same error!

Now I started a whole new wordpress blog & tried with it. But to my shock it was the same error there also. This means the latest WordPress is having some problem. Some one please help.

I also tried with these feed url ‘s https://dt.yogtec.com/wp-rss2.php & https://dt.yogtec.com/feed/ . Now it says:

Error getting URL: 404 – Not Found

These links are also working in browser!