I have had this exact same issue for hours tonight. It could pick up and find my primary Analytics account for my primary site. But I was trying to link a second account through a second website and getting the same result. “Error: User does not have sufficient permissions for this account.”
I JUST GOT IT TO WORK! Try this. Complete the setup allowing the plugin to use the default analytics account that it picks up. THEN – under site kit click on SETTINGS, select the drop down by analytics (far right). Then on the far left click EDIT. It will show the defaulted property that is already connected, but should not allow you to select a different property and view. Select the property and view that you want and click CONFIRM CHANGES.
This finally worked for me and I correctly have my two websites, connected to the two different and proper analytics accounts. (Seems to be a programming bug).
Good luck, hope it works out for you.
