Limited Support
Our team is currently on holiday, so support will be limited during this period. Response times may be slower than usual, and some inquiries may be delayed.
We appreciate your patience and understanding, and we’ll resume our usual support by the end of August.
I just contacted the developer ( https://wordpress.org/support/topic/wpforo-support/ ), he said it will be in the next release. Will report back on how it works.
Both my reCAPTCHA and CAPTCHA plugins now support wpForo Forum.
Added CAPTCHA for wpForo Forum Registration page. (you can enable/disable it on the settings page).
also works on the pages for comments, login, registration, lost password.
https://wordpress.org/plugins/fast-secure-recaptcha/
https://wordpress.org/plugins/si-captcha-for-wordpress/
Fast Secure reCAPTCHA 1.0.3 now works perfectly!
They've added 2 minor releases on Feb 12th. for wpForo
3.0.0.3
(12 Feb 2017) - Fixed reCAPTCHA on wpForo Registration page was not working unless comment form was also checked.
3.0.0.2
- (12 Feb 2017) - Added CAPTCHA for wpForo Forum Registration page. (you can enable/disable it on the settings page).