Graphic LCD Backpack

I recently bought this LCD backpack and LCD screen soldered together: https://www.sparkfun.com/products/9351

Unfortunately i think it must be very old because the library does not seem to work anymore and any forums or tutorials are very old. When i run the library's example, it prints out gibberish on the LCD.

This is the Library: https://dlnmh9ip6v2uc.cloudfront.net/assets/4/6/7/5/9/529e539c757b7f724b8b456a.zip

any suggestions? Thanks!