We have a lot of people come to the forums who insist they do not find the button that after some discussion have clicked the wrong buttons ingame, what are you seeing at this moment?
Upload the screenshot at imgur and paste it here with backticks ``.
Edit2: I added the first 2 steps to my screenshot guide and you should then be able to see the middle button it’s only 2 clicks at this point before clicking on Anub’Arak.
Edit3: For example in this post above mines there was a poster who said he just clicked 1 other button but was 4 other buttons before he got stuck in a loop.