I have the same case as Juleke94. In the end there is no allow button. I have Big Sur 11.1 and try to use Synapse for the first time, as I got myself a Blackshark V2 headset and want to use eq etc. Anyone know an answer?

So what I just found out, is that Apple doesn't want those extensions anymore. Now I've seen that there are also "system extension". Apple says about it, they should be the future of the extensions, as they are not having deep access to the computer system. I have absolutely no idea about all this and only found out about it, because I want to use software for my Razer headphones on my Mac as well. Now my question: is there any chance to copy "RazerHid.kext" from extensions to system extensions? My problem right now is, that either "Add 'Razer Synapse.app' from Applications Folder into allow list both in Security and Privacy.", nor "All I had to do was add the razerhid.kext to the privacy tab in Security & Privacy of System Preferences on the left categories of Accessibility, input monitoring, and full disk access, and then restart the system to get it working again." works. I just don't see the allow button.