Cannot Authorized/get token code from Yahoo! Gemini API

[syafi1204]

I've been trying to pull report data from Yahoo! Gemini using API. I've created an app on YDN to get customer id and customer secret and I put oauth.datorama.com as a callback domain because I want to put the result data to datorama platform.

I've followed the instruction on https://developer.yahoo.com/gemini/ and run the php file. First, the page successfully go to the agreement page to get the data from my account, then when I clicked 'Agree', the result page is always like this

AccessDenied
Access Denied
7AA75693A4B6963C

wrwmF9SWG9jrt8gUhHmtjRHSVwsHcvMS2RZfiKF27zeDfp/PV5jd3nL2uEWH0kqBCuOk9d3fiMo=

Can anyone tell me the solution for this problem? Or is there something that I did wrong?

Thanks.