Could you comment on the "Reported in March 2017, emailed them 9 times about the issue since then. Still unfixed as of now." claim, as it seems imperative to the discussion?
Is there something that can be improved here? Perhaps that inbox not as actively monitored as it could be?
We have real-time monitoring for that inbox and a 24/7 ops team. We have corresponded many times about this issue, and have made many changes over that period.
It's not as simple as just shutting down the open proxy because we need an open proxy to adequately protect users' privacy on our site. It just needs to be more locked down and more obvious it is a proxy, which we are doing right now (half done already).