Post Indexer not rebuilding index


I am trying to create an initial index of the site. I installed and activated the plugin yesterday. After configuring the post types, I clicked on “rebuild index” and the rebuild queue says “2 sites in queue, 0 sites currently being processed, 2 sites awaiting processing, 0 sites will complete processing on next pass.” I figured it would just start indexing, but nothing has happened at all and it has been almost 24 hours. Is there another place I need to go to make this happen? Thanks!