Why the currency in Google Analytics data differs from the ad services cost data currency?

This is due to how the import works:

1. OWOX BI converts costs to the currency set in the chosen Google Analytics view. For example, if your ad cost data currency is Euro but the Google Analytics view's currency is USD, then Google Analytics will show cost data converted to USD.

2. All other views that use the same dataset will show cost data in the view's currency.