Customer has trying to set the Login_hint to control which Webex accounts can login to their company's work iPhone.

However, even they set an email address that is not registered with Webex to Login_hint, the email address will be able to create a free account from the "Sign Up" button.

If possible I would like you to add a function to hide the "Sign Up" button of webex app through org setting.

That's very helpful for customer.