1) Why must I open an InstaForex account to run this EA? Why can't I use my own broker?
2) You say withdraw your profits regularly. How often? Daily? Weekly?
3) What if I lose all my money on the first day? Do I deposit again and pray that it won't happen again?
1) You do not have to use InstaForex! You can use any broker you want, Its just works best at InstaForex. I don't know how its works on other brokers, so Im not recommend to use on brokers that I don't know how is works on. But you can try on any broker you want.
2) Withdraw as you want but do not be greedy! Just withdraw when you see some profit that worth it to withdraw!
3) If you lose your money in a first day then you start all over. Forex is risky! Didn't you know?
But if you use instaforex with a set file 5000, 10,000 or 20,000, you will not lose your money in a first day. Most likely you will be withdraw very nice profit every week.