Lineage scenario between Synapse pipeline and Purview failing

I'm currently testing a lineage scenario between a Synapse pipeline and Purview.
I used the Lab 22 to test this scenario 'Use Microsoft Purview with Azure Synapse Analytics':
https://microsoftlearning.github.io/dp-203-azure-data-engineer/Instructions/Labs/22-Synapse-purview.html#integrate-microsoft-purview-with-azure-synapse-analytics 

Everything works fine, data are copied, except the lineage scenario which failed with the following error:
"The catalog provided for lineage reporting cannot be connected, please check the catalog uri and network connection."
Screenshot below:

Questions:
1. As Synpase seems to be correctly connected to Purview, in order to troubleshoot this error, is there a way to get further information like stack trace in the Synapse logs?
2. Should the Purview Account and Synapse Workspace be deployed in the same Azure Region?
3. Is Lineage scenario between Synapse and Purview still supported with the latest Purview version?
4. Could you share a sample where the Lineage Scenario between Synapse and Purview works?  

Thanks for your help,
Fred