Xero to Quickbooks Online migration using Dataswitcher

Has anyone used this successfully? I followed all the directions and ran this over the weekend and am receiving some errors and keep receiving emails to start it again. The latest errors say "Error after conversion, differences found in DS postcheck" even though I don't see any differences as integrations are turned off and no one is allowed in right now. We meet all the criteria as far as I can tell from all of the documentation. I'm just not sure how to resolve this or reach someone to figure out if it can be resolved. Obviously our company is anxious to get things up and running for the new year. Thank you!