Symptom: Gratona shows QuickBooks authorization expired. Please re-authorize your QuickBooks connection., or sync stops after a period of working.
Cause: The QuickBooks Online authorization is no longer valid.
Fix:
Open the QuickBooks drawer from Integrations.
Click Reauthorize QuickBooks.
Confirm you are reconnecting the intended QuickBooks Online company, then finish authorization.
If you manage connection health in Connected Apps, use reconnect there after checking the provider status.