Q Light Controller+

Let me first tell you how i connect the raspberry.

I connect the raspberry to my (wifi) router with a cable ip 192.168.178.1.
In safari and Chrome i go to 192.168.0.252:9999 nothing is found.
Also checked I've the raspberry is find in my ip list and that isn't.

Can i connect with a cable directly into the mac?

yes, on a mac there is no need for a crossover cable. just plug in

this is a generic network setup issue. Nothing to do with QLC+ or the Raspberry Pi.

192.168.178.x is not the same network as 192.168.0.x

You need to set your Mac IP to something like 192.168.0.100

if you set the netmask to 255.255.0.0 its all in the same network

I connect with a cable and change the IP addresses and now it works fine!