你好，我问下，参加每个月的竞赛账号 9月份和10月份都不一样，那么到月底了是放弃原有的上个月的竞赛账号，使用新的， 还是新旧都可以共同 一直使用，还是每个月都要申请下新的使用？
Hello gxk,
I had to translate your question and if I understood correctly, you are asking about expiry of contest accounts. Every month you have to register for a new account for contests for that month. So after September, your contest accounts will expire and October accounts will be activated.
If you want a demo account that does not expire, as long as you keep using it, you request for an extended demo here: https://www.dukascopy.com/fxcomm/
Regards
Open trading account