You need a lower average most likely (in ranked rounds) or to beat some higher tier players.
wgt rubric:
When you have played at least 5 ranked rounds - and your average score is equal to or lower than 100.00 you go from Hack to Amateur. Average re-sets.
When you have played at least 10 ranked rounds as Amateur - and your average score is equal to or lower than 80.00 you go from Amateur to Pro. Average re-sets.
When you have played at least 20 ranked rounds as Pro - and your average score is equal to or lower than 72.00 you go from Pro to Tour Pro. Average re-sets.
When you have played at least 25 ranked rounds as TP - and your average score is equal to or lower than 67.00 you go from Tour Pro to Master. Average re-sets.UPDATE: now your 72 average is down to 67, so you most likely need more "ranked rounds." (Not practice, not coin rooms, not par 5's, not par 3's, not custom courses.)