I forgot user id

You have forgot user ID of which site, was that your application ID?

Kea

You can get your ID and password but you have to email the authority of KEA and tell them about your issue that you have forgotten your ID and password. They will send you the ID and password in your email. But you have to do email from same email that you have enter before. I am giving you the email id- Keauthority-ka@nic.in ,in this email ID send your issue about forgetting ID and password.