After filling out the login form on a site, the "login" button is not active.

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I am trying to log in to a betting site via BAS. After filling in the username and password fields, the "log in" button is not active. It is not clickable in any way and when I click it, there is no change in the site.
Site: https://www.holiganbet1106.com/tr/sports/i/
Sample account information:
login: cmkucuker54@gmail.com
password: Sakarya54