After creating a test developer account for my portal and confirming the email address I am trying to login. After pressing the Sign In button the credentials are submitted and the browser is redirected through a couple of pages to https://developer.niwa.co.nz/?it=a with the following content.
(The portal is Hosted by Apigee, not on-prem)
{ "status": "error", "message": "HTTP 415 Unsupported Media Type (id: 1143238165)", "data": null, "request_id": "1768797164", "error_code": "1143238165" }
Is it integrated portal or drupal based dev portal?
Integrated
It's the integrated portal
please reachout the apigee support.