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