Create an Account - Recovery and Communication Options
The verbiage for this section is: "Please provide a mobile number or email address. It will be used to help you recover your username, reset your password, and for system notifications. You can edit these options in Settings."
The page used to allow the user to choose between mobile number and email address, but now only allows for the email address. The mobile number can be added in settings after the account is set up and the email address can be removed at that time.
When did this change? Why did it change? Did I miss an announcement that it would change? Can it be changed back? Having email as the only option makes it difficult for many potential users.