My site use jnews theme. And when I activate wpforo forgetten password section not work on my theme.
But when I deactivate wpforo work perfectly.
I change settings everything wpforo but not change anything.
Please activate wpForo back, then navigate to Dashboard > Forums > Settings > Features Tab and set "Replace Reset Password Page URL to Forum Reset Password Page URL" option disabled.
Please delete all cache and leave some screenshot of the problem, I don't see it.
That "Processing" message is not a Wordpress message or wpForo message. Something else is doing that, some plugin i guess.