This is for 3.6.0 version. In Proxy settings, there's an option to turn on "Check With Another Proxy When Crawling Failed".
But, in my tests, when crawling for keyword ranking fails (regex error or captcha found error), SEO panel stops. It does not
go to the next proxy automatically.
It should automatically try next proxy, and next proxy, and next proxy until it is successful or ALL proxies fail.
Thanks.