Q: Can you please put the steps to change the rescuer email address since I cannot receive any emails

The steps on the page that you posted from should work, but you can only change your rescue email address if you remember your answers to your security questions :

- log into the account via the 'manage your apple id' button on http://appleid.apple.com

- select the Password & Security section on the left-hand side of your account's screen

- answer the account's security questions

- you will then get a screen where you can change the address (and/or the questions)

If you can't remember your answers, and you aren't receiving the reset email to your current rescue email account (and you've checked the spam folder as well as the inbox on it, and tried clicking the reset link again) then you will have to contact Support in your country to get the questions reset.

Contacting Apple about account security : Contact Apple for help with Apple ID account security

If your country isn't on that page then try this form to contact Support : https://www.apple.com/emea/support/itunes/contact.html

When they've been reset follow the above steps for changing your rescue email address