I have not logged on to my account for some time. I was required to give verification of my email address. When this was done I came to a screen which was asking me to set up an additional two step verification. I found this very confusing - the first screen was asking for mobile phone app. Strange as it may seem I do not use a mobile phone. Some how I have accessed my account. Must I have this additional log in security? I am happy with just userid and password.