Let me help you resolve this, Eileen.

To begin with, please know that QuickBooks will depend on what that specific third-party app provides us.

Also, the difference between the conversion rate for your Bill and Payments is natural due to QuickBooks updating the currency rates every 4 hours.

Since you want the currency to have the same conversion rate, I suggest editing the payment transaction to match your preferences.

Additionally, you can check out this article to learn how to send your expense receipts and bills: Email receipts and bills to QBO.

Let me know if you have further concerns about your bills and payments. Keep safe.