Thanks – I hear you. Is there an alternative providing the same kind of security functionality as Wordfence, that would be compatible with GD?
It sounded in that particular thread like the issue also affected other security plugins (captcha) not just WF, so if it’s an issue of not providing all of the arguments as the organic registration form it might still need to be addressed for better compatibility.
It sounds like the issue popped up originally after a WP update and subsequent WF update in 2013.