Please make sure to have the most recent version, there was a problem with a database table not being created because of the length of the primary key. This could be the situation, let me know if this fixes the problem.
Check to make sure that tables exist in the database:
wp_reader_posts
wp_reader_sources
wp_reader_source_relationships
For more information about the database:
https://aweplanet.com/braydon/2013/04/tuning-the-awe-feed-reader-and-publisher-for-speed/
Also if you have Firebug installed in your browser, or another developer tool, you can view the AJAX calls that are being made to see the status and response for each feed. Make sure there are no errors.