1. go to the file:

   /wp-content/plugins/wordfence/modules/login-security/classes/controller/captcha.php

2. find the text "wordfence_ls_require_captcha"

3. change that line into:

   return apply_filters('wordfence_ls_require_captcha', false);

                                                        ^^^^^

                                                        change this

4. save the file and try to login.

Just use DNF...