According to the ban list you were banned for Code #001, also known as spawning weapons, which was probably a bug due to a recent update. It also happened to several other players, and they were un-banned eventually after appealing.
So in order to play again you also have to appeal, and it's pretty simple.
By clicking here, you can find out pretty much everything you'll need to know before Appealing- such as the rules, format and the meanings of each ban code.
Afterwards
click here, paste the format and fill it out - then submit it when you're done.
If you're still unable to understand,
click here for a step-by-step guide on how to appeal.