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.
You just know that that page will be gone one day and then nobody will ever be able to find that pinout anymore
Not to mention that nobody knows what other code that QR code might have run on their device when it was scanned.
QR codes themselves are a security problem.
QR codes just store a text string, so it’s down to the client to interpret the string and execute it in a safe manner
Print the page and save it in a box so you can be a hero in 20 years.
As a public service, we should set up clearly named torrents of files like this.