Afk training with bot legal?

Everyone abuses afk-training with bot, there's no point playing unless you are one of them.

Is it legal to afk train with bot?

Technically it is illegal. I see it all the time, since I train a few different characters throughout the day in the training room. I'm going to start recording them botting and not responding to me. You'll some higher levels get deleted.

The recording are usless because, a player doesn't need to reply another player.

what about answering the admin? he actually knows everyone bot-train 24/7 and doesnt do anything

You don't need a bot to train. Simply attack a traning post and exit silly. Nothing illegal with that.

most of them are casting spells too