Let me explain why some people can't keep up with the orders: For example, if I open a minimum of 0.1 ETH, the follower needs to have one-tenth of my capital to keep up. If my capital is currently 3300u, you must have 330u of capital to follow. For BTC, if I open a minimum of 0.005, you need at least one-fiftieth of my capital, which is 66u, to follow. In other words, if you want to follow all of my orders, you must have one-tenth of my capital, which is 330u. However, in general, if you have 100u of capital, you can follow all of my BTC orders, but you may not be able to keep up with the smaller ETH orders.