Well from what i have heard, seen around, people were doing AA 24/7 and wonder why they got banned. I used to do AA 12 to 14 hours a day with my alts but manually logging them in one by one all day, i had to go to the bathroom, had to eat also, even had to shower and do errands during the day sometimes. So since our GM's are not mythical creature that are brainless, they probably figured out what people were doing in game.
Also i am pretty sure that if they find toons botting, they can look up all accounts on that same IP adress and send them all in one click on vacation. All the talk of people on how GM's will not find out, they won't waste their time looking for stuff etc, guess what?? seems you might be a good example that they do. We have the same amount of GM's but for 2 servers only in the US, play clean or they will get you, i tell that to my guildies, no matter what, it's not worth it.
Don't blame Gameforge or other players for your mistakes