Hi @johnwood, 

Let’s perform some steps in order for your invoice to render your customized template.

You would need to re-create your template and follow the steps provided by my colleague @MarkR to set it as default, then print a dummy invoice to check if it’s really reflecting the template.

If you’re still encountering the same result, you would need to update your PDF viewer or Adobe.

Please refer to this article for more information: How to Update, Repair, or Re-install Adobe Reader/Acrobat.

If you have other concerns, feel free to post again.