Yeah they tend to "flag" you which means any of your new accounts will be constantly watched they also do IP bans if they catch you gold farming on a lot of accounts, if you make an account you just get instantly disconnected and banned.
Thats very rare to get flagged or IP banned. They may watch you if you get banned on multiple accounts within short time. I use topbot premium wich has proxy manager in itself, so thats good.
I was flagged before I got my new modeum, everytime I'd bot they'd catch me within a day, now using the same bots on a new IP I've not been caught for 4+ months