Fatal error: Uncaught exception 'Exception' with message 'WordFence API error: The Wordfence key you're using is not valid. Make sure you copied it correctly from http://www.wordfence.com.' in /home/*/public_html/wp-content/plugins/wordfence/lib/wfAPI.php:33 Stack trace: #0 /home/*/public_html/wp-content/plugins/wordfence/lib/wordfenceClass.php(595): wfAPI->call('twoFactor_verif...', Array, Array) #1 [internal function]: wordfence::authenticateFilter(Object(WP_User), 'ad_ssg', 'ZRIi*BU&3A_#v,]...') #2 /home/*/public_html/wp-includes/plugin.php(199): call_user_func_array('wordfence::auth...', Array) #3 /home/*/public_html/wp-includes/pluggable.php(469): apply_filters('authenticate', NULL, 'username', 'ZRIi*BU&3A_#v,]...') #4 /home/*/public_html/wp-includes/user.php(53): wp_authenticate('username', 'ZRIi*BU&3A_#v,]...') #5 /home/*/public_html/wp-login.php(753): wp_signon('', '') #6 {main} thrown in /home/*/public_html/wp-content/plugins/wordfence/lib/wfAPI.php on line 33
Please check this. I will add the key manually in the meantime and come back with the result.
More info:
1. I have a premium key
2. I use the phone authentication for the admin user.