Hi there, @Peter Lacey,
For your first question, we're currently receiving reports from other customers about the error you received when setting up the receipt forwarding feature. Rest assured, our product engineers are working to resolve this timely.
I suggest getting in touch with our Customer Care Team to be added on our list. This way, you'll receive email updates about its status and resolution.
On the second one, there isn't currently a way to directly allocate the cost of goods for resale to an invoice.
As a workaround, you can add a new line to the invoice by clicking Add work. Then, enter details of the materials in the Description field. Once the payment comes into the bank, you can assign them categories. For more information about the category list, you can visit this article: About SA103F Categories.
I recommend checking out this article for more product updates: QBSE Blog. To help you speed up in reviewing and categorising transactions, you can use rules in the program. For more details about this process, here's an article you can refer to: Create Rules.
If you have other concerns, I'm just a comment away. Have a good day.
