Help with 7-segment LED backpack

Hello, everyone, I’m building my first arduino project but have come across a few snags. The first is that I cannot get my 7-segment LED Display that has a LED matrix backpack to work. I’ve downloaded the necessary libraries and everything is soldered.

Here is the code and a few pics of the breadboard and circuit.

Thanks in advance!

Rocket_Launcher.ino (7.6 KB)

Could you please check that you have not mirrored the wiring of the backpack.
Please also check if the LED is soldered the right way round.