Invalid connection credentials error when configuring an enterprise gateway

[Anonymous]

Hi,

I am trying to configure an enterprise gateway which connects a PBI file inside my Sharepoint site. The image below displays my configuration details. However, I am currently receiving the error "Invalid connection credentials". What credentials (username + password) do I need to input to allow me to successfully connect? 

[Seth_C_Bauer]

@Anonymous The Authentication method needs to be set to Oauth, not Windows.

[Anonymous]

Hi @Seth_C_Bauer ,

I unable to see the option to set the Authentication method to Oauth. The only authentication options that PBI service is giving me are: Windows and Anonymous (shown in the picture below). 

I have tried inputted various username and password combinations, but i'm still getting the error warning "Invalid connection credentials error when configuring an enterprise gateway" when trying to configure the gateway. I am trying to connect the gateway to my a PBI file in my SharePoint site to enable scheduled refresh. How do I fix this? How do I achieve this?