Feeds not work with Single Category Permalink

Hi,
thanks for created Single Category Permalink Plugin, it’s a great plugin. But i have a problem with feed Rss.

My Google Webmaster Tools Center notify me that all Feed Page return “404 error”.
If i deactive SC plugin, it work.

IMHO this problem is caused because the original category permalink is “example.com/states/germany/” and related feed we can find at “example.com/states/germany/feed”

But, when we active plugin, the permalink become “example.com/germany/” and related feed should be “example.com/states/germany/feed” but it not exist.

There are solutions for this problem? How i can resolve this?

Thanks in advance.
Bye.

David

https://www.ads-software.com/extend/plugins/single-category-permalink/