I've got some major issues in a couple of campaigns where ROAS has just tanked (these are long running campaigns that have historically been doing well). I was trying to evaluate the products in the campaign (we have a large catalog of about 10K products so have products broken up into campaigns by product type). I looked at results from Sept 1 - today and it shows our cost is around $4K. I went to the products tab and selected the same date range to evaluate if I had items that were getting a lot of clicks and no revenue. When I exported that report it showed my total cost at like $500. How is this so far off? Am I not looking at something correctly?