At his point you should be able to login to the device and see a Main Menu with different icons/pages on it. If you see an empty Main Menu you have successfully log in to the device but the user has not be set up to see any pages. Please read more about User rights and menu set up below.
When no warehouses and menu groups (user groups) has been set up the user should be able to see all the menu items.
Once you have verified that access from the mobile device is working, it is recommended to setup user rights.