You need to edit the account group's properties (on iOS, go to Settings -> Accounts & Budgets and tap on the group, on Mac click twice on the group) and change the currency setting from currency x to Local currency.
worked on group and one of the sub accounts but not the other 3?? Not a great start to using this SW
I am sorry but I am not sure that I understand what you mean. Can you please rephrase your message?