My guess is that you aren't getting the query account name field set in your data connection. You can't set rules on people picker fields, so you'll need to add a helper field for this. Name it SelectedAccount or something, and set the default to the account id in the people picker fields. Put a rule on this new helper field to set the account name query field in your user profile data connection, then execute the query. Feel free to attach your form in a reply (under Options) if you need a hand. :)
Hilary Stoupa
