Mobile Reports for Power BI Report Server

Hi All, 

I  am using PBRS now for publishing my reports. I followed the instruction on: 

https://docs.microsoft.com/en-us/power-bi/mobile-app-ssrs-kpis-mobile-on-premises-reports  

to connect the server through my mobile. But unable to to. 

I am using latest version of PBI app and Reporting server. The  error i get is - 

 " Please use SQL SERVER v. 2016 and try again "