CAN'T LOGIN TO ACCOUNT

For many years I have been playing dominoes online in the LiveGames application, but somewhere on May 6 I can’t log into my account, I tried to describe the problem in the support found on the site and they answered they say ask questions from your account, but how can I ask if I can’t even log into it when I try after entering the login and password, this is what happens and this cube can spin for at least an eternity without opening an account