Hello @jamesosborne, thank you for your response.
In answer to your questions:
Do you know of any other administrators for your site, who may have also connected Site Kit?
– I am the only administrator of the site. There has never been other admins.
If there are none do you have another Google account which you may have used to created the existing Google Analytics property?
– I only have one google account.
Do you recall adding Google Analytics to this site previously? From checking your site source code the existing Google Analytics property may have been inserted via WooCommerce or a third party plugin.
– I did previously add site kit, then removed it. Now I have added it again. I also have the following google related plugins on the site: Google Listings and Ads (active), Google Tag Manager for WordPress(inactive), Meta Tag Manager (active),
WooCommerce Google Analytics Integration (Active).
Do you have any suggestion on how to address this?