That is not the solution to the puzzle there is no 9 and you cant even move the 3 second.
not the one who wrote it, you can see someone else did as I quoted their solution in my guide. Also it is the solution, I just tested it. Use context clues and you'll see its the position of the buttons themselves and not the numbers you're clicking. 1 - 9 from top left to bottom right, the solution works. If you wanted a more literal solution, heres the solution written out as which numbers you press rather than which buttons.
6, 4, 5, 8, 4, 6, 2, 3, 7, 4, 6, 2, 3, 6, 8, 5, 2, 3, 6, 8, 5, 2, 3, 6