The error message:
Error: libusb_open() failed with LIBUSB_ERROR_NOT_SUPPORTED
could indicate that you have not properly changed the driver using Zadig. Ensure that it looks similar to this:
The debug_port line doesn’t make sense:
debug_port = COM7
The idea of using Zadig is to disable the COM port restricting the ESP-Prog and allowing WinUSB/libUSB to access all features of the debugger. Most likely, the line is ignored. But remove it anyway.