mobile transaction bridge configuration.

Greetings experts, I am currently following the Liberate Your ABAP Transactions Using Mobile Transaction Bridge tutorial (https://developers.sap.com/tutorials/cp-mobile-mtb-rec.html), but when I get to step 10, I don't know displays the sap webGui for html interface.

I already created my Back-end Systems, configured Role Collections in my subaccount and I still haven't got a solution.

Do I have to do any additional configuration in the on-premise ECC system?

I appreciate your suggestions.