RGB 8x8 Matrix Display with Glediator

I recently bought this RGB 8x8 Matrix Display: https://www.sunfounder.com/full-color-rgb-led-matrix-driver-shield-rgb-matrix-screen.html

Glediator doesn't find the Com port of my Arduino Uno. I uploaded the Arduino firmware for Glediator, but can't get it to work. Could it be that the display can't operate with Glediator? I just started with programming, so I don't really have any knowledge.

Arduino Firmare for Glediator: http://www.solderlab.de/index.php/downloads/file/24-frimwareglediatorws2801v2