ctrlX Core Wifi connection via static IP

[DurNik]

Hello, I am trying to control the ctrlX CORE X3 via a wifi connection. The CORE is already in a suitable network via a wifi dongle and it can also be accessed as desired as long as you are in the same network.

At the moment, CORE can only be accessed via an automatically generated IP that is always changing.
Unfortunately, I don't know how to assign a static IP so that the CORE can always be reached via the same address.

I have already tried to create a new IP in the network interface settings (Photo). But regardless of whether DHCP is on, it is not accepted or overwritten with an automatically generated one.

Which way do I have to go to create a fixed IP for CORE?

Thanks in advance!

[Marc-Smaak]

I have tried this too, I can add a static IP next to the DHCP assigned address and they both show in the window. 

Save also worked, but I did not take a screenshot.

After reboot the address is still there. I am using V1.20.2

[DurNik]

I tried this aswell. When saving it deletes all IP adresses (also the just added one) and shortly after generates the automatic (DHCP) adress.

Did you change any settings? 

[CodeShepherd]

@DurNik Could you add a screenshot how it looks like before you press save? Adding an IP is possible with entry e.g. "192.168.2.1/24".