help me please

otc trading
why can't I trade otc anymore? I have money in my acct and have other otc stocks. I can't buy more and I really want ilus. I've been trying for 5 days to get ikus and I'm missing making $ on it...please help. anyone
p.s. I get a notice saying otc market is too volatile and we won't let u make this trade. that's the gist anyways.lol