Yellowbird Foods review for Google & YouTube

Integration does not work. I've had a Google Ads account for years now that's connected to our Google Merchant Center (also connection issues with this), but it doesn't seem to want to pull that information into Shopify. The only option I have is to create a new Google Ads account... why? I go into Google Account and everything on my end is linked, verified, and claimed. What is this app even for? Nothing works.