Hi Fabio
Good to hear things are up and running! That is correct though; right now your website has been migrated to the new cloud infrastructure (OpenShift). The next step, as outlined in On the November 2nd Deadline, is upgrading compatible websites to Drupal 9. This process will commence next week. According to https://club-automobile.webtest.cern.ch/en/admin/reports/upgrade-status, your website is compatible. No further actions are necessary from you; the upgrade will be completed automatically.
Thanks!