D365 trail instance: unable to create org service using custom code

Hi,

I have created a D365 trail instance v(9.0.2.54).  I'm trying to connect to this instance from .net console app through OrganizationServiceProxy. But I'm getting the following error.

"An unhandled exception of type 'System.InvalidOperationException' occurred in Microsoft.Xrm.Sdk.dll

 Additional information: Metadata contains a reference that cannot be resolved: 'https://xxxxx.api.crm8.dynamics.com/XRMServices/2011/Organization.svc?wsdl&sdkversion=9'. "

 The tried with both the urls:

https://xxxxx.api.crm8.dynamics.com/XRMServices/2011/Organization.svc(one taken from developer resources)

https://xxxxx.crm8.dynamics.com/XRMServices/2011/Organization.svc(one we used in earlier versions)

But not working.

Looking for your support to resolve this issue.

Thanks,

Nithya