at the moment my address is https://aivyapp.wpcomstaging.com/ but when after my webpage setup is completet, I will map my domain aivy.app with this wordpress installation.
Right now on aivy.app my old website is running, which is connected to my google analytics account. could it be that site kit is searching for a domain in my google analytics that fits https://aivyapp.wpcomstaging.com/?
Best regards!