I'm sorry about the issue. Is it gmail email address?
What happens when you sign out the new email address, then sign back in your old email address?
Do you have windows xp, vista, or 7, or 8, 10, or mac computer?
Can we do a remote support session, so I can troubleshoot the issue directly on your computer together with you?
Please reply at the box below. Thank you,
Are you having issue with gmail email address? Or something else?
Have you tried the Need help option, or forgot password ***** etc.? Thank you.
I'm sorry. Google does not provide phone or live support. I will continue to help you here.
What happens when you receive the text verification code?
Can you please confirm the email address you are having issue with?
Please reply at the box below. Thank you.
Do you mean you cannot access that gmail email address any more, i.e., you cannot read your email messages at the website www.gmail.com?
Usually, you would not follow any instruction from any message that you do not know or that you are not expecting.
Do you have a phone number ending with two digits 08? If yes, what's the full phone number? And is it able to receive text messages?