StretchDB creating error

I succeeded to set up StretchDB before this month, but it was failed this month.

I have tried using both wizard and command for StretchDB, both error message from SSMS and the log of StretchDB wizard (Path =C:\Users\XXX\AppData\Local\Sql Server\StretchWizardLogs) are about "Gen1 Data Warehouse has been deprecated in this region. Please leverage Gen2 Data Warehouse".

I used South East Asia SQL2016 Dev edition VM and South East Asia Azure SQL Database Standard SKU this time, and Azure documentation said South East Asia already became Generation 2 since 2019/6/1.

How can I resolve this environmental problem? Thanks!