@delbarco might just be an SA thing, but our modems allow us to configure the ssid's and passwords, why not just keep it the same or is that locked out? Though, I haven't used a service providers router in years, but often have to setup for others, and always ensure it isn't default. And if it's replacing a solution, I make it the same as it previously was to ensure I don't get phone calls about device not connecting. But, everytime I replace mine, my duets connect up with out issue to the new router.
Also try the zadig libusb drivers for win 10, they solve lots of com port issues I have found in the past