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The score increments when any of the pins 2 to 9 is high.
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You have enabled pullups on pins 2 to 9.
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This causes pins 2 to 9 to be high - unless you do something to over-ride that.
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The score will increment unless you hold ALL of the pins 2 to 9 low.
How are you holding pins 2 to 9 low to prevent the counter incrementing?