Authorization error accessing the Gateway as a Service Documentation

Hi

For w6u2...

- I've assigned my account the GW_Admin and GW_User roles

- I've created the opensap destination pointing to http://sapes1.sapdevcenter.com:8080/sap/iwbep?sap-client=520 with the correct credentials

- I've registered the GWDEMO service as instructed

But I still get an authorization error when I click on "Open Service Document" and an unable to access the service message when I go to "EXPLORE"

I've reviewed everything I've done a few times and I don't believe that I've missed anything.

Would anyone know what I might have overlooked?

Thanks in advance.