Power BI Desktop - Connect to UserVoice

Indeed­.  I've been looking all over for examples on how to use the UserVoice API.

I found this great post from Steve Howard on API Strategies with Power BI (http://angryanalyticsblog.azurewebsites.net/index.php/2016/05/16/api-strategies-with-power-bi/).  There is an example on connecting Power BI to the Twitter API using OAuth.  I followed the steps and I managed to get the Twitter data easily.

I modified the example script to work with User Voice but I always get an error message "The user was not authorized".  I am using anonymous authentication.  I feel like I am 2 inches away from the solution, but I just can't seem to get it working!

Here is the script I am using:

// Source: http://angryanalyticsblog.azurewebsites.net/index.php/2016/05/16/api-strategies-with-power-bi/

let
// Concatenates the Consumer Key & Consumer Secret and converts to base64
authKey = "Basic " & Binary.ToText(Text.ToBinary(#"UserVoice API Key" & ":" & #"UserVoice API Secret"),0),
url = "https://MYSUBDOMAINHERE.uservoice.com/oauth/request_token",

// Uses the oauth2/token method to obtain a bearer token
GetJson = Web.Contents(url,
[
Headers = [#"Authorization"=authKey,
#"Content-Type"="application/x-www-form-urlencoded;charset=UTF-8"],
Content = Text.ToBinary("grant_type=client_credentials")
]
),
FormatAsJson = Json.Document(GetJson),

// Gets token from the Json response
AccessToken = FormatAsJson[access_token],
AccessTokenHeader = "bearer " & AccessToken,

// Uses the method using the bearer token from the previous POST oauth2/token method
GetJsonQuery = Web.Contents("https://MYSUBDOMAINHERE.uservoice.com/api/v1/reports/user_satisfaction_responses.json",
[
Headers = [#"Authorization"=AccessTokenHeader]
]
),
FormatAsJsonQuery = Json.Document(GetJsonQuery)
in
#"FormatAsJsonQuery"

Any ideas?