Thanks @Wesley
When having an issue with a site, it always helps to provide the domain so other people can see/experience the issue rather than reading about it (especially so when, in my case, I used Google to translate your original post.)
The solution to your issue is explained in [Support Guide] Direct links to my single page app (SPA) don't work in that you need a rewrite rule as shown in Netlify’s documentation here and in the Create React App documentation here.
If you have further issues or queries, do not hesitate to reply.