Unable to sigup (User not found)

I’m able to login with username and social login, but not to signup.
The plugin log is:
WP_Auth0_Routes::migration_ws_get_user 401 User not found
The Auth0 log is:
Failed Signup
{
“description”: “User not found”,
“user_id”: “”,
“user_name”: “[email protected]”,
“strategy”: “auth0”,
“strategy_type”: “database”,
}

Any glue? Thanks.