Use of screen_hint signup with Universal Login and social connections only

[benfosterdev]

We’re using Auth0 Universal Login and have only social logins (with Google) enabled.

In our NextJS app we’re using NextAuth to handle the authentication. I was getting an error when sending screen_hint: "signup" in the authorization parameters. After much Googling I eventually stumbled across this FAQ:

Login Page doesn't work with only Social Connections Enabled

Problem statement The login Page doesn’t work when enabling only Social Connections, even though the Social connection is enabled. The following error appears: error: invalid_request description: connection not found for the client Cause This is caused by the /authorize request having the parameter: screen_hint=“signup”. Given that there are only social connections enabled, no signups can be performed (They are just logins) so providing the screen_hint=“signup” param will cause this error. …

This suggests that you can’t use the signup screen if using only social connections.

I understand that strictly speaking they are not signing up for a user account but I think this is confusing to the user during registration. If it’s not possible to use the signup screen could we at least customize the text that’s displayed on a per request basis?

[benfosterdev]

Further to the above, I can confirm that the screen hint does work when I create a database connection to enable username/password login.