Hello Jislaaik,
Thank you for contacting WooCommerce support.
I understand that the Continue button stays greyed out after adding your Google account and address in Google for WooCommerce.
This usually happens when a required pre-launch item is incomplete, often the store address.
Please go to WooCommerce > Settings in WP Admin and make sure the address, city, postcode, and country are filled in.
For more details check this guide:
Common errors and how to resolve them
Let me know how it goes.
Best regards.