Data mismatch Facebook - Looker Studio (windsor)

Hello, 

I amb doing a report using the Windsor conector to get Facebook data to Looker Studio. All data is correct except "add to cart" and "sales" metrics.  This mismatch is not due to the acquisition window, we have already checked it. We are looking at the same date range. 

What is the reason of the mismatch? Some images to illustrate what is happening: 

Looker Studio vs Facebook Ads manager - adds to cart: 

maravidalia_0-1732699653424.png

maravidalia_1-1732699695896.png

Looker Studio vs Facebook Ads manager - sales: 

maravidalia_2-1732699781499.png

maravidalia_3-1732699800361.png

 

Thank you.