Auth0 support for the nonce Parameter for Authorisation code flow

Hi, I’m currently evaluating Auth0, and I noticed that it does not support the nonce Parameter for Authorisation code flow. Can someone please confirm if this is true? Please see below.

https://dev-test.uk.auth0.com/authorize?
response_type=code&
client_id=XEnkZfFzF6wUsCE9QgLBPAbW7IjTmAks&
redirect_uri=undefined&
scope={scope}&
state={state}

Only the state parameter is supported for Auth code flow in the above authorisation request.

Lastly, I noticed that Okta by Auth0 does. Can someone confirm if Auth0 and Okta are now merged into one product? Assuming that any customer currently using Auth0 will need to be migrated to Auth0 by Okta.

I would appreciate any clarity on the above.

Thanks