Hi James,
I’m trying to do the same thing (modify WP User Frontend to work well with ACF, but I’m getting stumped. Any chance you could share your solution?
I’ve been trying various things to achieve this — setting different roles depending on a querystring value on the register page (ie. role=author or role=contributor) — but it keeps passing through to the default role. Anyone have an example of doing this successfully through wp-fb-autoconnect?