The error message (shown below), "Body contains unsupported tags or attributes: script," can appear when saving a template in the Shopify Order Printer app.
Luckily, this can be easily solved by creating a new template instead of updating an existing one. Use the "Add template" button to create a new template.
After this, the template will save correctly.
If you're still having issues or questions, feel free to contact our 24/7 support team.