In order to help you to fix problems regarding Google Shopping ads integration, we would like to ask for staff account from Google Merchant Center with minimum permissions, and we are 100% surely that NO change will be done WITHOUT your permissions.
Please follow below steps to send invitation to us properly
Login to your Google Merchant Center
Click on the tools icon > Account access > Click on the + icon to add users
3. Copy our email, email@example.com, and click on ADD USER button.
This way, we can access to your Merchant Center, and have a better understanding about your issue/concern. Next, our Dev team will check, and provide a proper Product Reviews XML Feed file to you later.
If you need some more helps, please feel free to contact us via live chat, or email us at firstname.lastname@example.org