I've tried many WU branches. This one is the most bureaucratic. Even if you have your MyNumber with you, it has to be up-to-date and matches your ID address. Getting a new MyNumber is optional and it takes more than a month to get the new version....
The automatic money exchange machine has moved to lower level of Akihabara Station Entrance/Exit A3. Good for those who need urgent cash but the rates are bad!