Jlink - Cortex-M error

Dear Dialog,

I took the steps based on the Quick Start guide of the UM-B-014 User Manual. After the install of the IDE and the drivers, I load the ‘peripheral_examples’ sample project.
At the step 4.4.1.3 in the guide, at the target option on the debug tab the j-link/ j-trace cortex settings won't load. So basicly I can't see the 4.4.1.4 step based on the guide.
After building the project I want to start a debug session but I get an error :
No Cortex-M device found in JTAG chain. Please check the JTAG cable and the connected devices.

Tools and drivers:
Operating system: Windows 7
Keil uVision5: mdk_510.exe
Segger J-link driver: Setup_JLinkARM_V484a.exe
FTDI driver: CDM v2.10.00 WHQL Certified
SDK: DA14580_SDK_3.0.2.0
TeraTerm: teraterm-4.82.exe

Thank you, for your helping.
Kind Regards,
István