A margin was asked for.
A margin was asked for before a withdrawal. After that, Dukascopy asked for deposit again on ground of insufficient credit score.
Unable to Withdraw
The following is the original recommendation
无法出金,需要交保证金
客服需要缴纳保证金才能提现,交了保证金后,又说信用分不足,需要再次交钱补足信用分