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’ve used the unification software a lot and it never required a browser for anything. That means that they went out of their way to change the way the program works and make it worse. This seems to be a pretty common practice these days. Companies take a perfectly good program and then actively make it worse. Just leave working stuff alone, damn it!
I’m surprised as well… What the fuck? Can’t be that long ago I used it too.