Based on the comments of his profile, the main limiting factor for not receiving greater recruitment efforts was due to his low level of strength—which was insufficient for most subdivisions.
Despite being at the same level as him, the disadvantage of her star level was offset by the presence of Balens who could even curse or make bad luck befall an individual several levels higher than her as long as she had enough spiritual power to grant the wish. And considering that her gift also just so happened to be limitless spiritual power, this was not a concern for her.
Meanwhile, the Pathfinders were the most enthusiastic about him joining since it was the only subdivision that required members with a variety of ranks—after all, many relics had maximum strength requirements for its entrants.