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As if it wasn't bad enough that they want me to use a random internet service to add a keyboard to a usb wifi receiver, they have the balls to put this for Firefox users. I clicked out of pure curiosity, as I'm not even remotely interested in involving a corporate internet service in getting my keyboard connected to my computer. This is the message you get now on Logi Options software if you have a Unifying Receiver: 
For the curious: https://logiwebconnect.com
EDIT: some people on the thread have brought up that the error message being displayed for Firefox users is due to the WebUSB API not being implemented by Firefox due to security concerns. This still does not justify having to use a web app to plug peripherals to a PC.
I agree so much.
I sometimes go to a grocery store near work to pick up lunch, and I usually get like two things. The cashier always seems confused when I ask for no bag, despite me obviously being capable of carrying those items to the register.
So not only are people making weird choices for themselves, they seem adamant that I need to make them too.