Hello,
In order to set up your shop, first validate your domain on Business Manager and Shopify. Then, search for the Facebook Marketing app. Before beginning these procedures, it is important to verify your domain. If you continue to experience issues, let me know and I will assist you and Over an hour shouldn't be required.
let's connect for further discussion, shall we? I'm looking forward to working with you.
Regards,
Mujtaba A.