Shopify Connector app is syncing but nothing is posted to QuickBooks Desktop

We recently migrated from QB POS to Shopify POS. While we are happy with most aspects of this transition, we are still unable to see any Shopify transactions post to QuickBooks Desktop. The Shopify Connector app shows that transactions are synced but nothing is showing up QBDT.

I have been working with Shopify Plus Support for over a week, but they have been unable to pinpoint the problem. They have requested that I send them various logs, which have been sent, and also had me check things such as the comparing the Realm ID to the Company Intuit ID, making sure the account mappings are correct and that we are running on the latest versions of all software.

Even though all transactions show as synced, there are numerous errors showing which I suppose are generated from failed transactions but have not been able to confirm that.

I would appreciate any insight someone might be able to share.