During the past 2 weeks, Henry and the group had already entered the dungeon several times. And due to that, Henry was able to rise his warlock profession to level 9 of the Silver Rank.
As for his summoner profession, it remained stuck in the same rank. No matter how many times Lenta, Diana and Storm tried to kill as many monsters as possible, they were not capable of ensuring that the profession reached the golden rank.
That was something that frustrated Henry. This kind of limitation was not something that he was expecting during the time that he was given a chance of selecting two professions. But right now, there was nothing that he could do about it.
As for his warlock profession, he had tried killing as many monsters as possible during his previous trip into the dungeon, but it had not yet succeeded in reaching the golden rank as well.