Unable to get the SSO Login of my organization

Hi,
I new to Aiven Kafka service and I am trying to login to the console with the help of SSO Login.
However, I am getting an ‘Unknown User’ error message.
Also, when I tried to sign-up, it is not showing me the option like “Login with XXX SSO”

How to get the SSO Login page on the sign-up.
Thanks

Avinash