Hi @mansemat,
We understand how this can feel, and most of the time, it’s usually due to a connection issue.
Could you check the status of all your connections on this page to see if there’s anything that’s not correctly connected?
example.com/wp-admin/admin.php?page=connection-test-admin-page
**(replace example.com with the site’s domain)**
If need be, you can disconnect from some services and try to reconnect. Lastly, remember to give the WooCommerce app all permissions when connecting it to Google:

Link to image: https://d.pr/i/fGXIqw
I hope this helps with the setup, but you’re welcome to create a support thread if you face further challenges – https://ww.wp.xz.cn/support/plugin/google-listings-and-ads/#new-topic-0.
Thanks.
Maybe this is the problem with Multi selectioning auf Destination countries in STEP two step three shows only a white screen.
Solution: select only one country.