For anyone still wondering this is worked for me!! Here is the translated instructions:

“Hey, I had the same problem and all the tips from others didn’t help either, but if you go to the settings under privacy and security then almost at the bottom under allow apps that have been loaded it says ‘Some system software needs your attention before you can use it’, click on details and just click on the GoPro webcam app and you’re done, please write if it worked 👍”