All WordPress Single Category Feeds Redirecting to Only One Category Feed

Hi! URL is: https://goo.gl/5Mc6Q

The problem we are facing is that, we are unable to get WordPress Category Feeds working on this blog.

The Example Category Feeds:
1. https://goo.gl/LYAq
2. https://goo.gl/xJVMa
3. https://goo.gl/srHqR

and all other Category Feeds are redirecting to only one of category feeds: which is: https://goo.gl/GbHmS

We are not using any Feedburner Redirect on this WordPress Installation.

Please suggest and help me to resolve this issue, so that i can get Category Feeds working.

Thanks in Advance.