The sign - Bugged npc
There is a npc which you have to wait for 2 hours for him to finish his study, however days after he still did not complete his study Step 7.4: "4. Go back to Prontera and pass The Sign to Metz. He's pretty excited when you pass The Sign to him and he is glad you completed the quest. He'll start to study The Sign. Metz takes some time to study The Sign. Come back after 2 hours."
Speaking with some people who did it on Origins, they said you have to come back exactly two hours after talking to him, even if you talk to him days after. I tried that and still did not work (maybe exact seconds as well? lol)
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There is no point in coming back exactly 2 hours. Any time after 2 hours should work
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Luckily for me, I did marked my time, many people would not even memorize it
Simple adjustment is just to change from exact 2 hours to anytime above 2 hours- which makes sense, since he just needs to study and after that his study is over