for security reasons all commission IT services will have to implement multi-factor authentication (MFA).
This means that as of 01 November you would need to use your phone (MFA by SMS), your smartphone (EU Login App, available from Google Play and App store) or a security key (Yubikey, Fido2key, U2F, etc).
For more details, please follow this link https://webgate.ec.europa.eu/cas/manuals/EU_Login_Tutorial.pdf .
You have filled in the online complaint form and submitted it to this site. The other party has received it.
You will now need to agree with the other party on the dispute resolution body that will handle your dispute.
You have 30 days to do so.
If you need help, contact your national contact point.