NSX-T does not support L7 HTTPS with certificates.
As a workaround you will also need to upload each portion of your Workspace Ones SSL cert individually. You will need to load them in the following order:
- Upload Workspace Ones SSL cert with no other component.
- Upload the Intermediate cert for Workspace Ones SSL cert.
- Upload the CA Root cert for Workspace Ones SSL cert.
Test connectivity to verify that you're no longer seeing the "502 Bad Gateway" message.