It looks like PLO20 bots were banned. So I looked at PLO50 and found another ones... Fairly sure these are the same bots as PLO20 bots but little bit tweaked (3bets 6% instead of 4%, squeezes 8% instead of 5% and so on). Bet sizings are exactly same though. They bet 86% and 100% preflop, 50%/70%/100% on the flop.
Now something interesting. Those 2 PLO50 bots are 2 out of 3 winning regular accounts from last 2-3 months. Also 3 out of 4 winning regular accounts on PLO20 are missing bots. So it looks like there are literally 2 winning (pre-rakeback) human regulars at PLO20 and PLO50 on iPoker.