Hi @amourdesthes
To make ACF works with your multilingual website, please take a look at this page: http://www.advancedcustomfields.com/resources/multilingual-custom-fields/.
If you don’t know how to set it up and want it to be working soon, you can always hire a developer to help you out with it, and I’d recommend looking for one on https://studio.envato.com/ or https://www.upwork.com/.
I hope this helps 🙂