Commentaire officiel
This is an old post, but the problem back then was mainly old cookies as we transitioned into a SSO (single sign on) -- the problem now is that browsers block 3rd party cookies / cross-domain data, but that is required in order to support the SSO. If you clear cookies for the following domains:
*.pioneerdj.com
*.rekordbox.com
*.kuvo.com
*.zendesk.com
*.gigya.com
...and ensure that all of them are set to allow cross-domain data and 3rd party cookies, your experience here will be seamless as before!