Drupal 7 - Internationalization module - some blocks not visibile (i18n)
Translatable means you have to actually translate it to show on the second language. On the block configuration it should give an option to translate it or perhaps check the block's visibility language settings.

Another option if you want the same exact image on both languages you make the block untranslatable.

You need to also enable i18n_select if you have not done so
and go to "detection and selection" admin/config/regional/language/configure
and enable at least URL selection for interface/content

This will allow that when you visit yoursite.com/page assumes English 
and when you visit yoursite.com/LAN2/page assumes LAN2 

More info on setting up internationalization