Hi there, @ezekielrecords.
I'd like to know the specific troubleshooting steps you performed to fix this issue. This way, we can accurately direct you to the next steps.
One of the reasons why your eBay account stopped updating sales entries in QuickBooks Online (QBO) is that your mapping had been modified. This is why I recommend reviewing the mapping.
The Sales Record No section should be mapped from your spreadsheet to Sales Receipt No and not assigned to either Sales Receipt Date or Service Date in QuickBooks.
Next, check if there's a Deposit Account for each sales receipt in your CSV, and that the Deposit Account is your actual bank account or income account in QuickBooks.
When the locations do not exist in QuickBooks, turn on the Track locations feature, and then create location information for GB, CZ, and NO. Follow this article to track these locations: Set up and use location tracking in QuickBooks Online.
Also, ensure that you add the product/service items from your CSV to the Products & Services section in QuickBooks to avoid encountering the error 'Item (Product) invalid'. Then, correct the Service Date format for each sales receipt in your CSV to D/M/YYYY.
Lastly, review your CSV again to correct any necessary information, ensuring you map the Memo, Location, and Sales Receipt Date column from your CSV to their appropriate QuickBooks fields.
If mapping isn't the reason, I recommend checking eBay's website to see recent issues in relation to uploading sales entries to QBO, and if they provided troubleshooting steps to fix it.
In the meantime, you can manually import your sales entries into QuickBooks to continue tracking them. Please take note that once the integration is fixed, duplicate transactions might occur, and you'll need to delete them in QBO.
Please let us know if you have any additional questions. We're here to assist you promptly.