SAP BW with On-premise Data Gateway Connection Error

I've installed on-premise data gateway and i'm trying to add a data source with SAP Business Warehouse but I get the error details as below

The same source has been verified in power bi desktop, the only different is that a language option setting in powerbi desktop and none in data source setting in power bi web

Unable to connect: We encountered an error while trying to connect to . Details: "We could not register this data source for any gateway instances within this cluster. Please find more details below about specific errors for each gateway instance."Hide details

Cluster URI: https://wabi-south-east-asia-redirect.analysis.windows.net
Status code: 400
Error Code: DMTS_PublishDatasourceToClusterErrorCode
Time: Tue Feb 26 2019 15:25:36 GMT+0800 (台北標準時間)
Version: 13.0.8482.125
my_laptop_win10_2: Invalid connection credentials.

Underlying error code: -2147467259
Underlying error message: The credentials provided for the SapBusinessWarehouse source are invalid. (Source at 172.20.97.66/00/100)
DM_ErrorDetailNameCode_UnderlyingHResult: -2147467259
Microsoft.Data.Mashup.CredentialError.DataSourceKind: SapBusinessWarehouse
Microsoft.Data.Mashup.CredentialError.DataSourcePath: 172.20.97.66/00/100
Microsoft.Data.Mashup.CredentialError.Reason: AccessUnauthorized
Microsoft.Data.Mashup.MashupSecurityException.DataSources: [{"kind":"SapBusinessWarehouse","path":"172.20.97.66/00/100"}]
Microsoft.Data.Mashup.MashupSecurityException.Reason: AccessUnauthorized