Then you have to do what I wrote before:
You have to enable the Smartaccess and/or Smartservice in the Flex project, and install the necessary license on the panel.
edit: I do not know if smartaccess or smartservice will run in demo mode if you do not install a license.
With smartservice, another HMI RT can operate the TP177B remotely.
This could for example be a PC RT running on your laptop.
With smartaccess, the TP177B becomes a webserver, and certain operations can be performed remotely by means of a standard webbrowser.