OP bots don't farm fates, they stay put in one area and kill the same mobs over and over again for days at a time and the majority of players know how to recognize one.

Was farming fates the only thing you did the whole time? I ask because that would not cause people to look twice at you ordinarily. Even being online for several days would not draw attention as many people leave the game logged in even when not playing. You must have done something else to cause people to grow suspicious of you.

Most people suspect a bot when they see the same player, in the same gear, at the same exact spot performing a clearly scripted routine over indefinite periods of time. If you were not doing that then no one would look twice at you. What did you do to draw people's attention?