[Razer BlackWidow] F9 key not working

F9 key's generic function doesnt work
It's not getting registered (e.g. when I want to add a breakpoint in Visual Studio or pause a game of Dota2)
However
When I press Fn + F9, the macro LED is blinking, so there should not be any physical damage.
I never used the macro function, or had any macros added

What I tried:
I reset the keyboard to factory settings
I deleted all profiles manualy
I updated synapse
I closed synapse

Thanks in advance for any suggestions