If you look at the image below you can see one of the channels is correct. The other is showing Order Item Downloaded in the UpdateStatus column?
'Order Item Downloaded' - generally, it is not an error message, it simply means that an order was downloaded for this item.
I took a look at the example SKU provided and as I see currently the correct stock level is being submitted to both Magento channels:
The Magento Sync is also running properly on your account.
Please let us know if are still experiencing issues with Magento stock level updates.