How did you do it?
I've banned the IP from my server therefore all my customers with Xenforo don't have to do a thing
Adding 184.108.40.206 to csf.deny and iptables DROP...
DROP all opt -- in !lo out * 220.127.116.11 -> 0.0.0.0/0
DROP all opt -- in * out !lo 0.0.0.0/0 -> 18.104.22.168