How do I set a Posts page on BP-Community? (Blog)

Hello!

I created a page called Blog with the template "Blog and News" and I tried "Default Template".

I went to Settings > Reading and set "Front Page Displays" as Activity as Static Home page and Blog as the posts page, but the posts page does not become the blog of the site.

Can you please help me? the site is http://www.deeprr.com (Activity was renamed as wall and the blog is "Blog" <--- this is the one that does not work as a blog...)

Thx, Donald.