In order to log in to CROS (from a computer outside of the European Commission’s IT environment), you need to have an EU Login account allowing two-factor authentication. That means that you must either register your mobile phone number in your EU Login account or install the EU Login application on your smartphone. See the instructions for doing so at here
All EU login accounts have to be validated by the CROS portal team. (Until they have been validated, they will be blocked.) From 25 May onwards, please send us a request via the contact form
in case your account is still blocked (in order to have your account validated).