Hi!
I also am having a problem with the connection to Wordfence API.
I'm using free version of Wordfence and the connectivity tester returns 404 on both wp_remote_post() tests.
The Wordfence Whois Lookup returns "Sorry, but no data for that IP or domain was found." for both wordfence.com and noc1.wordfence.com even though I can connect to both of them from the server on port 80. Is the whois lookup using some different port? Most of the ports are blocked from our firewall.
On Live Traffic page I get "Wordfence Live Activity: Call to Wordfence API to resolve IPs failed: We received an empty data response from the Wordfence scanning servers when calling the 'resolve_ips' function."
Are these connection errors due to the free version or is there some problems somewhere else?
I also have Limit Login Attempts plugin installed because I hadn't activated wordfence till today and there's been brute force attacks for some 18 hours now, so I don't want to disable it if there's some problems with wordfence.
Wordfence scan was also failing previously today but it's working now. The last scan alerted me: * Your DNS records have changed
I might have done some testing with Wordfence on previous wordpress server and the domain's IP's changed after that. Could that be the cause of these issues?