First, verify the health of Azure Data Factory and related services in the Azure portal to ensure there are no ongoing service disruptions.
Check if there have been any changes in resource allocation or availability in your region, as high demand or hitting quotas could cause delays.
Ensure your Azure Integration Runtime is correctly configured and scaled to handle the load.
Double-check your subscription status to confirm that there are no lingering billing issues affecting resource allocation.
Use Azure Monitor to analyze logs and performance metrics for any warnings or errors.
If the issue persists, consider opening a support ticket with Azure support for a detailed investigation.