Answer:
Ask your administrator to check whether you have the authorization to dial into the server via VPN.
After the VPN connection is established, access to the full versions of RFEM, RSTAB, SHAPE‑THIN, and so on, should work. In this case, it is necessary to use the authorization file for the network dongle.
More information about the network dongle can be found in the following document:
Installation of SENTINEL Network Dongle