Hi Alexandra,
There's probably one of two things going on:
1. Please make sure you verified and claimed your public shop url (sarehandjones.com) and not your myshopify.com domain. Some of the screenshots in the app are confusing, we're releasing an update to fix that.
2. Please make sure that the Google Merchant Center account where you've verified the domain matches the Google account that you used to authenticate the Shopify app. Sometimes people accidentally authenticate the app with a personal Gmail address, rather than their business Google address. You can see which GMail address the app is using in small text at the bottom of the onboarding pages.
If neither of these work, please re-post and I'll contact you directly to work it out.