Joooid app has been updated. Testing the update right now, and everything seems to work fine. I read the comments and ratings before updating... It was curiose to see one star, five stars, and almost nothing in the middle.
It just seems to me many dumb useres installed it on their droid without taking care of the Joomla setup. You need the Joooid extension to be loaded on your Joomla installation, didn' t you realized it? Anyway, in the market description, the author nowhere specify it. So... app is five stars, but author deserve the one stars for his... dumbness!