I have reported the same issue about a month ago and no progress has been done so far. I check in with the support every week, and they gently assure me that the "backend developers are working on the issue".

The total number of transactions is reflected correctly at the top of the table. Therefore it must be an internal Quickbooks issue - not actually related to the PayPal API. Most likely it is a trivial frontend bug that a single developer should be able to investigate in about an hour.

I am very frustrated with the service and loosing hope that this will ever be resolved. My case number is [removed], investigation number INV-45934.