Google & Youtube App - How to connect an existing merchant center

Hi Emmanuel, I have read so many of your replies and appreciate your knowledge! I was wondering if you have any idea as to what is happening with my account. When trying to connect my Google & Youtube app to the merchant center, I keep getting this error message “You don’t have access to link Merchant Center to Shopify. Ask someone with super admin access to Business Manager.” but I do, have access. I have reached out to Shopify and Google and have had no success. It’s strange because in my merchant center dashboard, it shows 4 products under the free listings account but I do not know where or how that is being fed if the app is now disconnected. It wasn’t alsways disconnected. Any help is greatly appreciated.