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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.
Add that to the list of reasons I'll never buy Logitech again.
That and crappy microswitches. For some reason all logi mice I had in my life always ended up with failed microswitches after months of usage.
Yes. Each mouse developed double clicking after a few months. My glorious mouse is still good years on.
And the support! Years ago they would just send you a replacement. Now the just send an"sucks to be you" answer.
I'm in the market for a new keyboard and mouse. Any brand recommendations? I'm looking for something normal... No mechanical clicking, no glowing lights, etc. Just a normal wireless keyboard and mouse.
I recently bought a cordless, very flat keyboard from Cherry - loving it.