You can change the language of your form when you are creating your Lead Form - inside the Facebook Power Editor.
While creating your Lead Form, you'll initially see the following window:
That's where you can change the language of the form that your audience will see.
How to get your support tickets resolved faster
Statistics have shown us that the more you tell us when you report an issue, the faster we solve that ticket. So...
1 - If you have screengrabs, please include them. A picture is worth a thousand words.
2 - If you have recorded a video showing the issue you're having, please include that as well. A video is worth a million words.
We recommend a free service called Loom for creating these videos. (this is a link to https://www.useloom.com/)
3 - To speed up ticket resolution, follow these useful tips How to Write the Perfect Support Ticket (That Gets Results Fast)