Hello, and welcome to the InfinityFree Forums!
First, your website http://lapensine.42web.io/ is returning a 403 Access Denied.
While I am unsure how your site is set-up, it seems to be working?
(Reason why I am confused is because the usual 403 is more InfinityFree themed.)
I am not sure why this is occurring for you. A few things to note: First, make sure to upload your site’s files to the htdocs folder of your site, second PLEASE avoid touching the root!
Accounts take about 24 hours from new to be prepared to run websites. New sites take about 72 hours to be propagated.