Power BI service to AWS Redshift

Hi,

When connecting to Redshift from PBI Desktop we use a VPN, no connection issues there.
When in Power BI Service we set up a dataflow (gen-1), we can reach and refresh data from AWS Redshift.
When in Power BI Service we want to setup datasource credentials we get this error: 
ODBC: ERROR [08S01] [Microsoft][Amazon Redshift] (10) Error occurred while trying to connect: [SQLState 08S01] timeout expired

Our data is stored on: Europa - west (Nederland), we have whitelisted the IP range from the official source; https://www.microsoft.com/en-us/download/details.aspx?id=56519

including the list below: 
"name": "PowerBI.WestEurope",
"id": "PowerBI.WestEurope",

and the list below: 
"name": "PowerQueryOnline.WestEurope",
"id": "PowerQueryOnline.WestEurope",
"name": "AzureCloud.westeurope",
"id": "AzureCloud.westeurope",
possibly the reason why the dataflow works?

Anyone had a similar issue and a fix?