It's a pleasure to see you here in the Community. I can share some information about the differences between the Sales and the Sales of Product Income categories for your downloaded transactions in QuickBooks Online.
Sales is the main income account that comes from the sale of products or services. This is also called “Revenue” or “Gross Sales”.
Sales of Product Income is the detail type of the main income account. This category tracks income from selling products. This can include all kinds of products, like crops and livestock, rental fees, performances, and food served.
Both are recorded as income but they're categorize differently. This isn't a big deal and won't make your income more than what it is. However, if you want to change the category for your PayPal transactions to Sales, you may follow the steps below.
If you're using the Connect to PayPal app, follow the steps I've laid out below:
1. Go to Banking menu at the left panel, then pick Banking at the top. 2. Click the Pencil icon on the PayPal Bank account, then select Edit Settings. 3. Under the Sales form content section, click the drop-down arrow beside Sales. 4. Choose Sales as the correct category. 5. Select Save.
If you're using Sync with PayPal, here's how:
From the App Center:
1. Log in to Intuit App Center. 2. Select the My Apps tab. 3. Locate the Sync PayPal app card and click Settings.
From within QuickBooks Online:
1. Click Apps from the left menu. 2. Pick Firm apps at the top. 3. Choose Settings at the Action drop-down. 4. Select Edit in the App Settings section.
For your reference, you can also check out these articles for further guidance: