Survey123 Website Does Not Display Data from Portal

Bkoziell

Running 10.5.1 Portal and trying to connect to Survey123 Website.  I can see statistics on my surveys, I can download the data from my surveys, but I cannot see the data on the Data tab or use the report writer. 

Error Message:

Failed to load https:/xyz.com/portal/sharing/generateToken?request=getToken&serverUrl=https%3A%2F%2Fcomet.pennichuck.com%2Farcgis%2Frest%2Fservices%2FHosted%2Fservice_f402d3c7576e4e669bce122b15f7e504%2FFeatureServer%2F0&token=_lZq_EolwIMkgTCf-NJqux5vEBhEtOvOkFTiVKN7MRlgx065Ixhv_bNZGLdcS2gPdB7AC97eAc527bH6c8Jjn-p-L50LLe7AgAzVNGy2CnoA7Lkd-XDFR1PsrQJFOyz4LvyCVhQpp24IQtfNH883OEBqkmP8vn2H_i-bWwHahaSAl8Qp07od85iMaNU9vifxNsSjilGXMcywKoGtNb2PXQ..&referer=survey123.arcgis.com&f=json: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://survey123.arcgis.com' is therefore not allowed access. The response had HTTP status code 401.
init.js:89 f {message: "Unable to load https://xyz.com/portal…Q..&referer=survey123.arcgis.com&f=json status: 0", response: {…}, status: 0, responseText: "", xhr: XMLHttpRequest, …}

leostmark

I'm also using Portal for ArcGIS 10.5.1 with Survey123, version 3.0 and getting a similar issue.  My survey publishes OK, and I'm able to view it in my Survey123 app, but the CORS error occurs when I attempt to run the survey in a browser, whether that be IE, Firefox or Chrome: the same error occurs.  I've tried adding the following to my Default web site on the Portal server.  I've also tried adding them to the web adaptor only:

<add name="Access-Control-Allow-Origin" value="*" />
      <add name="Access-Control-Allow-Headers" value="Content-Type" />
      <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />

This makes no difference and same error occurs.  Here's the error message in my browser's console:

SEC7120 Origin https://survey123.arcgis.com not found in Access-Control-Allow-Origin header.

I've even tried this:

<add name="Access-Control-Allow-Origin" value=https://survey123.arcgis.com />

I've also tried with just Access-Control-Allow-Origin, without the Access-Control-Allow-Headers or Access-Control-Allow-Methods, but it made no difference.