I have been trying for a few hours to get the Android WordPress app working with very little success.  The only error I was given after trying to log in was, No blog for that account.  After doing several searches and not really getting anywhere, I decided to check my wp-config.php.

I run WordPress in a multisite environment with several other bloggers.  Upon inspection of my config file, I discovered that the BLOG_ID_CURRENT_SITE and SITE_ID_CURRENT_SITE was set to 2 instead of 1.  I changed the id back, tried logging in again and VIOLA!  I was able to connect and browse all of the other blogs in my network as well.  Hopefully this will help someone else out that is having a similar problem.