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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.
Trying to figure out my next move when my harmony hubs become a pain or stop working altogether.
There aren't any great alternatives yet (maybe ever) but Sofabaton U2 and the Skip 1S seem to be the current most popular replacements.
You will lose some functionality, unfortunately there's nothing to be done for it but wait and support the companies trying to go in the right direction.
Personally I like the Skip 1S haven't tried Sofabaton.
Harmonys have required the internet since forever, which i get because the device database is constantly updating. I wouldn't worry about longevity though - we still use a 525 (the one from before they started limiting how many devices per remote)