Linux app "Sonaar" is about 2000000x more stable and convenient to use.
I hate that I sometimes have to use windows, which renders this generally good keyboard into near-useless piece of trash because it's constantly "Inactive" and I can't use Function Keys as Function Keys.

Please send my regards to the genius who decided that F keys default behavior should be "not default". Great thinking brother or sister, you should apply for work in government.