Cant allow system software from Developer, which was bocked

Dear Community,
I've got the following problem. After installing Parallels for Desktop, there is the message I have to allow the system software, which has been blocked by the security system, but when I want to allow the software nothing happens. I click on the button "allow" and nothing happens. Does anybody know something bout this problem?

Thanks you!
Fabian

 

Hi FabianK1. Please follow the below steps to disable System Integrity Protection (SIP) and check if it helps.

1. Restart the Mac, on Apple logo loading screen press CMD + R to boot into Recovery.
   
   
2. In Recovery, on Mac menu bar locate Utilities menu > open Terminal application.
   
   
3. Type in the commands below one-by-one:
   
   csrutil disable
   
   reboot
   
   
4. Back in a normal mode and install Parallels Desktop for Mac.
   
   
5. Boot macOS into Recovery again and enable SIP back running the following Terminal commands:
   
   csrutil enable
   
   reboot