The ban is purely for breaking rule 3.4, which you seem to understand better now as to why the ban was issued. You will be required to make a ban apology instead of disputing the ban, as disputing the ban is only when you believe the ban is valid.
You've included a very short clip of the very end of the situation. I've reviewed the clip provided by the report creator and you completely disregard their gunpoint. Furthermore, they spoke English.