If you have changed the password for logging in directly to WordPress, it may happen that the login button is no longer displayed.
To change the password, go to the settings and click on “Websites & Domains”.
Now press on [Setup], which is located next to login.
Now the general settings are displayed. Here you can choose a new password, you would have to change your password for the login button to appear again.
After you have changed the password, the login button should reappear.