Why every of my menu are in german language now ?

I played so far in a french language, my native one. I wanted to see other languages. So i tried to change the language. And now everything is in german. When i require french language, it doesn't come back, still in german. Even when i want english language, still the game stay in german language.

Please help.

Screenshot please?

It came back ok in french language. But it's strange, when i relogged, it was this time spanish language (a language i never tried). Then i clicked in the menu, and come back in french. Something very strange in my account...