Adrian, still shaken about what happened, is currently reading on forums that talk about Hell. He searched for dungeon entry restrictions and there was not much about it. He looked at the details and it seems that this restriction is not applicable to all dungeons in Hell.
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The thread goes like this:
Hell Lover 143: Is it just me or the dungeons in Hell have entry limits per day?
Wandering Devil 01: LOL! What are you talking about? (Thinking Emoji)
Just Here: I think he is high or just upset that he lost inside a dungeon. LOL! (Devil Laughing Emoji)
Hell Lover 143: I am serious! I entered a dungeon that was for a recommended level 250. I am level 270 if any of you are wondering, and it is for reference. I entered the dungeon thinking that I could carry my party members, but we were floored. We all died to a floor boss that is incredibly powerful.