Hey there @cfen,
Thanks for posting to the Community! Let’s see if we can figure out what might be going on together.
Customer who have tried to add a continue shopping button would see issues depending on how their flow and the flow trigger is set up. For example, the {{ event.extra.checkout_url}}
dynamic tag can only be used with "started checkout" trigger. That tag does not exist in the Added to Cart event. Added to Cart only shows 1 product/1 item and so it will only provide the data for that single item, not an entire cart. Only Started Checkout event will show the entire cart. An added to cart flow, you will want to use {{ event.URL }}
instead to take the customer to the item they added to cart.
You would have to find a way to log the page that they had last visited, and keep that data somewhere so that you could recall it for a button. Most continue shopping buttons were implemented with an add to cart or checkout as opposed to signing up for a newsletter. On the Shopify community, I found documentation regarding this and how it’s usually off a checkout event. However, it looks like you can code a way to take a customer back to their last viewed collection. I would try look through this doc and see if that helped and let us know if you come across anything or have questions!
Thank you!
Alex