How can I resolve issues connecting my site to Google Shopping?

I am having issues completing the connection between my site and Google so that I can set up Google shopping.

My Merchant account is all set up but I am getting stuck at the point shown in the images below, despite already completing these tasks. Has anyone encountered this before and how is it resolved?

Here you can follow the easy steps to solve your issues >> https://help.shopify.com/en/manual/promoting-marketing/create-marketing/google/setup

Thanks for the reply, however I have already seen this and it does not have a solution for the issues I am encountering.

Make sure to add your policies in Shopify > Settings > Policies