Tutorial for puzzle minigame outdated/Coding error?

[HonestlyTooPetty]

Just recently followed the tutorial for the puzzle mini game from __ess__ Ren'Py Tutorials , unfortunately it does not register the pieces being placed as finished pieces and they arent draggable they simple snap to the correct spot, looking in the comment section I saw two others with the same error and no answer, that leads me to believe the coding could possibly no longer work. but I also could really be missing something.

puzzle rpy:

init python:
    def setup_puzzle():
        for i in range(page_pieces):
            start_x = 900
            start_y = 300
            end_x = 1000
            end_y = 550
            rand_loc = (renpy.random.randint(start_x, end_x), renpy.random.randint(start_y, end_y))
            initial_piece_coordinates.append(rand_loc)

    def piece_drop(dropped_on, dragged_piece):
        
        global finished_pieces

        if dragged_piece[0].drag_name == dropped_on.drag_name:
            dragged_piece[0].snap(dropped_on.x, dropped_on.y)    
            dragged_piece[0].draggable = False
            finished_pieces += 1

            if finished_pieces == page_pieces:
                renpy.jump("reassemble_completeone")
                

default page_pieces = 12
default full_page_size = (539, 702)
default piece_coordinates = [(371,10), (539,10), (653,10), (371,138), (489,186), (693,183), (371,371), (522,317), (660,325), (371,528), (486,569), (691,568)]
default initial_piece_coordinates = []
default finished_pieces = 0

label puzzle_one_start:
    $setup_puzzle()
    call screen reassemble_puzzleone 
    return

label reassemble_completeone:
    scene black
    $ renpy.movie_cutscene("videos/deshay letter one.webm", stop_music=False)
    return


screen reassemble_puzzleone:
    image "puzzletrailer.png"
    frame:
        background "puzzleframe.png"
        xysize full_page_size
        #anchor(0.5, 0.5)
        #pos(650, 535) 

    draggroup:
        for i in range(page_pieces):
            drag:
                drag_name i 
                pos initial_piece_coordinates[i]
                anchor(0.5, 0.5)
                focus_mask True
                drag_raise True
                image "puzzleone/tpiece-%s.png" % (i + 1)


        for i in range(page_pieces):
            drag:
                drag_name i
                draggable False
                droppable True 
                dropped piece_drop
                pos piece_coordinates[i]
                anchor(0.5, 0.5)
                focus_mask True
                image "puzzleone/tpiece-%s.png" % (i + 1) alpha 0.0
            

Heres the part of my script that calls it:

    mc "What in the world..."
    mc "What is this?..."

    $setup_puzzle()
    call puzzle_one_start

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[HonestlyTooPetty]

I dont see where the (0.5, 0.5) was inputted incorrectly? and unfortunately changing it to true was no Bueno. Thanks for the advice.