Step 1: Click on the Orange "Connect with SoundCloud" button on the top of this page.
Step 2: In the popup window, login with your SoundCloud account and click "Connect and Continue".
Step 3: Still in the popup, after "Redirecting..." you will get: "This site can't be reached". Copy the whole link on the top of the window, starting with: http://localhost/scmerge...
Step 4: Close the popup window, paste the URL in the field on top of this page, and click on the "Submit" button. If everything is ok, you will be redirected to the Partnership Platform.