You can click on a username and then press the “message” button that appears in the popup.
I guess @techAPJ will come to our rescue.
I still don’t understand why you are blacklisting IP ranges from using your OG tags in the first place, so if you have anything to share about that, it would make us and our customers at least understand what is going on here. Is this putting more load on your servers than when we’d be using an oEmbed tag or something?