Your customer has a few options:
1.Enable their network adapters. There's no real benefit to disabling adapters. If they have both an Ethernet and wifi adapter, Windows will by-default use the Ethernet adapter as the primary network.
2. Use a modern version of Windows: on Windows 8.0 and newer, TurboActivate can read the hardware properties of disabled adapters.
3. Leave the adapter enabled in Windows and just unplug the Ethernet cable.
4. Leave the Wifi adapter enabled in Windows and just disconnect from the Wifi network.
5. Put their Wifi in Airplane mode.
6.Run your app or the TurboActivate Wizrad as-admin and TA will re-enable the network adapters briefly to read their properties, and then disable any adapters that started off disabled.
A lot of these options are already covered in the FAQ: https://wyday.com/limelm/help/faq/#disabled-adapters
And like it also says in the FAQ, if the customer doesn't want to use one of the above reasonable solutions to their problem, then they can just enable the adapter temporarily and TurboActivate will remember it for a while.