Thank you for your reply, but I'm not having the issue that you've given an answer for.

I can email and upload receipts and see them in the Receipts tab. No problem with this.

When I look at a transaction which is already in the Quickbooks Register and click "Show Existing" to see a view of attachable receipts, I get nothing to choose from for attaching to the transaction.

I'm including an image of the Receipts tab and also the transaction with the Show Existing window displayed. I hope this helps to show the problem I'm having.