ThinkExist.com?

Has any­one ever reg­is­tered suc­cess­ful­ly at ThinkEx­ist? I’ve tried many times, with dif­fer­ent address­es, and nev­er received even one con­fir­ma­tion mes­sage. I’ve also tried using their con­tact form many times, with no response. I final­ly tried con­tact­ing them via their domain reg­is­tra­tion address today. 

Google says I’m not the only one who has expe­ri­enced this prob­lem, but I’m not find­ing a whole bunch of com­plaints, either.