The challenge on Level 71 stems from the locked pieces on the left hand side, as until these are unlocked, pieces will not fall in the lower left Jelly area to remove those squares. Horizontal and vertical striped candies will be your main ally here.
Time to beat Candy Crush Level 71. Watch this video:
Thanks to Matthew Dean
Patricia Frederick’s Tips for Candy Crush Level 71
Shoot a horizontally striped candy at the isolated candies on the left to release more candies into the board. A striped/wrapped combo can take care of the isolated jelly square on the lower right.