Google Merchant Center - Confirm Domain

Log in to the Google Merchant Center. Go to "Company information" in the settings to confirm the domain of your store in the Merchant Center:



Switch to the "Website" tab and enter the domain of your store there. To confirm, select either Google Tag Manager or Google Analytics. If the GTM/GA app is active and linked in your store, you only have to click on "Confirm" to confirm the domain:



You can see how to set up the GTM/GA app correctly here: GTM/GA

How to confirm your domain in Google Search Console you can see here: Google Search Console