Shopify recently changed their API's that our app uses to create your custom text sign products within Shopify. This change requires you to accept a new permission for the Sign Customiser app in order to continue using it.
Stores that have not yet accepted this new permission will begin seeing this error message on all of their customisers starting 24/03/2025:
How to accept the new permissions
Log in to your Shopify admin
Navigate to the "Sign Customiser" app
Accept the new permissions when prompted
Once you have accepted these new permissions the error message on your customisers will go away.
What are the new permissions?
In Shopify's old API we were able to create the product in your admin and make it live in your storefront all in the same request. The new API requires us to first create the product in one call and then make it live in your storefront in a second call. This second call to the storefront requires us to be able to access your "Publications" in order to retrieve the ID of your storefront, which requires the new "Publications" access which you are now granting us.
To read more about this change please refer to the Shopify website: