Please go to Extensions->Plugins Manager, then un-publish these following plugins: "System - Language Filter" and "System - Language Code". After these 2 multiple languages plugins are un-published, please test again with EShop, it should work as your expect.
Same problem for me.
Language Plugins are un-published, Eshop plugins are published, the categories and products are in the database, the Shop Information shows the number of categories and articles but on clic nothing appears.
Versions Joomla 3.3.6 Eshop 1.3.5