Feed problem!

I moved my site from a folder to another following the tutorial on the codex page, by blog is working as usual but my feed doesn’t work at all.

Any feed URL that I try is redirecting me to this feed URL: https://www.promocoespravoce.com.br/feed and gReader is telling me that it’s empty…

things to consider:
I was using blogger, all my blog posts (except the last one) were imported before I made the change on the folders