Hi Christophe, 

Welcome to the Box Community!

It appears that your Box account has already been confirmed. I recommend clearing your browsing history before logging in to Box.com.

Let me know how it goes and thank you for posting!

Best,
Ann

I am still unable to see the folders that have been shared with me. Whenever I click the link I get the message "

Oops! We can't seem to find the page you're looking for.