Cannot access my email from a hotel

When I traveled to Marlborough, MA I stayed at a Best Western hotel. I got internet connection and I got to the login page of webmail.west.cox.net. However, when I entered my email address and password, I always got an error saying that I exceeded my invalid login attempts and have to change my password. Obviously this was no true, because my wife back in California could log in, and I was also able to log into my email from any OTHER place in Marlborough (and Boston). I tried multiple times (I know I did not mistype my password, and also tried east.cox.net. I also not only check the secure connection lock icon, but go deeper and check the certificate chain - just to make sure I am talking to the real Cox site.) In the past I saw places that completely blocked cox.net (and cox.com) like one hotel in Paris. But this time I saw the login page just could not get through. Anybody knows why this could happen? Any possible work-around? I am going back to the same place in April and July, so I really would like to be able to read my emails from my hotel room. Any help will be appreciated, a traveler