pay attention btbots's uers, you need to take care of your bots, make sure there are enough BTS for the order fees. we don't support other asset as order fee now.
account tpo-bot1 and open1, you have out of BTS already, I have sent you each 100 BTS to continue.
normally, the bots will keep at least 100 BTS for the future fees. but if all your BTS in the order book have sold out. and always can't buy back BTS. the reserve 100 BTS will run out too.