[Plugin: Mealingua Posts Translations] Text style changing.

Hello !
I’m quite new to the WordPress world and I have a small problem with the plugin : The style of my text post is erased by the plugin. Once I have clicked on the “other language” button on my final page, the article is loaded in the other language but doesn’t include any formating, i.e. another font, no paragraphs, no bold etc…
What can I do for the plugin to display the right format on my posts ?

http://wordpress.org/extend/plugins/mealingua/