Power BI Report server through WAP and ADFS

Hi everyone,

I just completed the setup for PowerBi mobile app through OAUTH and ADFS using this guide: https://docs.microsoft.com/en-us/power-bi/consumer/mobile/mobile-oauth-ssrs

While it works pretty well for the mobile app, the web browser aren't able to access the Power BI report server using the same URL. If i setup another URL in the Web Application Proxy it works, but people above my head wants to keep using a single URL as we open the portal for the external access. Is there anyone who succeed to configure AD FS and the WAP to use the same URL with the mobile app and the web browsers clients (chrome, IE) ?

Thanks for your help