Changing the Login Page

Hi!
I want urgent help regarding changing the Hestia Theme Login Page. I basically want to go back to my default WordPress login page, because some plugins are installed like the SSO or Customizer Login page. But after I installed the Hestia theme, the login page changed, and now when I go to My Admin Dashboard, it redirects me to This Link

The page I need help with: [log in to see the link]