When creating a campaign, the owner can enter more than 4 preset items. If the style does not support more than 4 entries – then the campaign creation should not support more than 4 items.
My next suggestion is to add a numeric format setting to the administration. Setting the date format in the administration can be done and the numeric format has the same weight.
As far as the question of currency is concerned, it remained unanswered. The currency in one place remains left, even if the administration is set to the right. See previous picture.