SAP HANA Cloud Portal : rde Subscribe not visible

Hi Experts,

I am working on SAP HANA cloud platform.

Unfortunately i press the "unsubscribe" option into the "Subscription tab into the SAP HANA cloud platform.

When i create "New Subscription" i am not getting the option to select "rde" or any entry exist "rde" into the list.

Can anyone help me how i can add the rde into my hana trial version.

Many Thanks,

Mithun