BuddyPress.org

hi,Your page will not be accessible as http://yourdomain.com/features.php as it resides in your theme,It should be accessible via http://yourdomain.com/wp-content/themes/your_theme_name/pages/features.php

Now my advise,better look at How to use page template in wordpress.

https://codex.wordpress.org/Pages#Page_Templates

You can use your features.php as page template and create a page features, so this file can be accessed via yourdomain.com/features

Hope it helps.