Hunter level stuck and not increasing?

Your Hunter level has soft caps at certain thresholds (e.g., Lv20, Lv30). Here is what to do: 1) Open your quest log and check for pending main story quests; 2) Look for a "Hunter Promotion" quest — completing it unlocks the next level tier; 3) EXP continues to accumulate but your displayed level will not increase until the promotion quest is done. This is normal game mechanics, not a bug.