Can't access React and Sass challenges

Hi !
I’m new to the forum so sorry in advance if I break any rule.

I can’t access React and Sass challenges. I found an answer on a similar topic saying to go to this link

But on this page, it says that the project is deprecated and the challenges have been migrated to freeCodeCamp and are accessible through their curriculum now.
Anyway I’m still unable to access them.
I even tried to use the beta version on FCC, but it won’t let me take the very first challenge.

Can somebody, please help me ?