I am having the same issue as well. I'm looking for an answer as I REALLY would like to play technic. I have the same problem and I am on a mac, when I click the link I see this message:
"
{"Status":"OK","Runtime-Mode":"productionMode","Application-Author":"Mojang Web Force","Application-Description":"Mojang Authentication Server.","Specification-Version":"4.6.12","Application-Name":"yggdrasil.auth.restlet.server","Implementation-Version":"4.6.12_build214","Application-Owner":"Mojang"}
"