I appreciate you for joining the thread, @StaceyHZ, and @happy7698.

I understand the relevance of matching the uploaded receipts in QuickBooks Online (QBO). However, as mentioned by my colleague, this issue is still tagged as an ongoing investigation. Rest assured that our product engineers are now diligently working to fix this as soon as possible.

For the time being, I'd suggest contacting our QBO Support to be added to the list of affected users and receive further updates. Here's how:

1. In your QBO account, click Help.
2. Click the Search tab.
3. Click Contact Us, and enter the error message in the description box.
4. Select Continue, and choose Start a chat or Get a callback.

You can contact us from Mondays to Fridays, 6 AM to 6 PM PT, and Saturdays 6 AM to 3 PM PT. 

For additional information on transactions that support attachments, check out this article: Add or delete attachments in QBO.

Know that you're always welcome to get back to us if you require additional help with matching receipts and other QuickBooks concerns. Have a good one.