It works through Bluetooth just fine, I just never got it to work with the USB receiver (I was trying just now, still no dice). The app also works just fine if you click cancel.

I hate how everything requires additional software all the time (at least on Windows). Just give me proper drivers and no bloat, how hard could that be? Instead I need the G HUB for button mapping on my G903, I need Logi Options for the fn keys to work on my MX Keys, I need two of Corsair's shitty fucking apps just to get readings from my "smart" PSU and to control the fans on my AIO, I needed an additional ASUS program that was incredibly fucking shitty, just to control the case fans (eventually gave up and now I'm more than happy just going into the BIOS settings)....and don't get me started on the rgb. Close G HUB? Now my mouse is all rainbows n shit. Close Corsair whateverthefuckname? Now my corsair keyboard has all the wrong colors since somehow they don't map them correctly to the onboard memory (I got rid of that keyboard and got the Mx Keys instead because there was 0 upsides to having a mechanical rgb keyboard). Even on my razer laptop, if I dare not have synapse, I'm stuck with shitty rgb mode, and they don't even try to get white properly implemented into their RGB keyboards.

Companies have had the chance to work together on making these things more standardized, less bloated, more controllable and user friendly, but instead they choose the path of bloated and buggy software or web apps for things you should be able to do locally. I hate it and I'm never going RGB or fancy schmancy that requires custom software ever again.