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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.
Mmmm... I sure love how if I want to check my credit score for free I have to go through several different companies, all of which have shady-looking websites that were probably last updated 10yrs ago (but only for the page where you request info on your credit score, otherwise they look fairly modern); especially when said companies have had a reputation for leaking everyone's info and yet are still the official US contracted companies for it. Granted, it's been a while since I last tried to do it, but it's really uncomfortable.