Multifunction Shield For Arduino Uno - buf

Hey, I've recently bought this multifunction shield for my Arduino Uno to do some university projects. My main issue is that when I first connected it to my Arduino it automatically turned on each top right segment in each digit. I don't know why this is happening and neither can fix it.
Any idead on how to solve this?
Thanks.

multi-function-code.pdf (940.3 KB)
arduino-multi-function-shield.pdf (374.0 KB)

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