Why can't I tag products on Instagram Shop anymore?

[Nebula_Club]

Hello everyone,
lately I have updated all products on my shopify. When i post something on instagram, I can't tag the products (i used to do this operation), and when I try to understand why, this error appears (its in italian) 

Please someone can help me understand what is happening?

[Victoria]

Hi, @Nebula_Club.

Welcome to the Shopify Community.

When viewing the error message, it looks as though you're unable to tag as the product(s) does not use the domain you selected for Instagram Shopping. It is not possible to tag products that do not use a selected domain in posts. Products need to be available in your Facebook catalog and Shopify store to be tagged in an Instagram post or story. 

To troubleshoot this, please try the following: 

• Check the affected product in your Shopify admin and confirm that it is available to Facebook & Instagram.
• If you're using Checkout on Facebook & Instagram, check the bulk editor in the Facebook & Instagram channel and confirm that a Google Product Category has been added.
• If products are available, have a product category added and do not show any errors, you may need to contact Facebook/Meta Support directly. (You can contact their support team through your Shopify admin > Facebook Sales Channel section.)

Feel free to share any additional questions with us here.